diff --git a/BUILD.gn b/BUILD.gn
index bafc1214690..dc28b546923 100644
--- a/BUILD.gn
+++ b/BUILD.gn
@@ -13,9 +13,7 @@ group("default") {
     # Fuchsia has run_vm_tests marked testonly.
     testonly = true
   }
-  deps = [
-    ":runtime",
-  ]
+  deps = [ ":runtime" ]
   if (defined(checkout_llvm) && checkout_llvm) {
     deps += [ ":llvm_codegen" ]
   }
@@ -66,9 +64,7 @@ group("runtime_kernel") {
     # Fuchsia has run_vm_tests marked testonly.
     testonly = true
   }
-  deps = [
-    ":runtime",
-  ]
+  deps = [ ":runtime" ]
 }
 
 group("runtime_precompiled") {
@@ -80,59 +76,41 @@ group("runtime_precompiled") {
 
 if (use_nnbd) {
   group("create_sdk") {
-    public_deps = [
-      "sdk_nnbd:create_sdk",
-    ]
+    public_deps = [ "sdk_nnbd:create_sdk" ]
   }
 } else {
   group("create_sdk") {
-    public_deps = [
-      "sdk:create_sdk",
-    ]
+    public_deps = [ "sdk:create_sdk" ]
   }
 }
 
 group("dart2js") {
-  deps = [
-    "utils/compiler:dart2js",
-  ]
+  deps = [ "utils/compiler:dart2js" ]
 }
 
 group("dartanalyzer") {
-  deps = [
-    "utils/dartanalyzer",
-  ]
+  deps = [ "utils/dartanalyzer" ]
 }
 
 group("dartdevc") {
-  deps = [
-    "utils/dartdevc",
-  ]
+  deps = [ "utils/dartdevc" ]
 }
 
 group("dartfmt") {
-  deps = [
-    "utils/dartfmt",
-  ]
+  deps = [ "utils/dartfmt" ]
 }
 
 group("dartfix") {
-  deps = [
-    "utils/dartfix",
-  ]
+  deps = [ "utils/dartfix" ]
 }
 
 group("analysis_server") {
-  deps = [
-    "utils/analysis_server",
-  ]
+  deps = [ "utils/analysis_server" ]
 }
 
 group("check_llvm") {
   if (defined(checkout_llvm) && checkout_llvm) {
-    deps = [
-      "runtime/llvm_codegen/test",
-    ]
+    deps = [ "runtime/llvm_codegen/test" ]
   }
 }
 
@@ -149,15 +127,11 @@ group("llvm_codegen") {
 # It must depend on anything that is required by the dart2js
 # test suites.
 group("dart2js_bot") {
-  deps = [
-    ":create_sdk",
-  ]
+  deps = [ ":create_sdk" ]
 }
 
 group("samples") {
-  deps = [
-    "runtime/bin:sample_extension",
-  ]
+  deps = [ "runtime/bin:sample_extension" ]
 }
 
 # This rule and the compressed_observatory_archive rule are for the Fuchsia
@@ -165,13 +139,9 @@ group("samples") {
 # the root build output directory for convenient access by the Fuchsia buildbot
 # scripts.
 group("observatory_archive") {
-  deps = [
-    "runtime/observatory:copy_observatory_archive",
-  ]
+  deps = [ "runtime/observatory:copy_observatory_archive" ]
 }
 
 group("compressed_observatory_archive") {
-  deps = [
-    "runtime/observatory:copy_compressed_observatory_archive",
-  ]
+  deps = [ "runtime/observatory:copy_compressed_observatory_archive" ]
 }
diff --git a/build/config/android/BUILD.gn b/build/config/android/BUILD.gn
index c8c978a175d..d3775d77f48 100644
--- a/build/config/android/BUILD.gn
+++ b/build/config/android/BUILD.gn
@@ -8,9 +8,8 @@ import("//build/config/sysroot.gni")
 config("sdk") {
   if (sysroot != "") {
     cflags = [ "--sysroot=" + sysroot ]
-    ldflags = [
-      "--sysroot=" + rebase_path("$android_ndk_root/$android_sysroot_subdir"),
-    ]
+    ldflags = [ "--sysroot=" +
+                rebase_path("$android_ndk_root/$android_sysroot_subdir") ]
 
     # Need to get some linker flags out of the sysroot.
     sysroot_ld_path = rebase_path("//build/config/linux/sysroot_ld_path.py")
diff --git a/build/config/mac/rules.gni b/build/config/mac/rules.gni
index 54b5a6c19cf..df8080e638f 100644
--- a/build/config/mac/rules.gni
+++ b/build/config/mac/rules.gni
@@ -12,17 +12,13 @@ template("code_sign_mac") {
   assert(defined(invoker.deps))
 
   action(target_name) {
-    sources = [
-      invoker.entitlements_path,
-    ]
+    sources = [ invoker.entitlements_path ]
 
     _application_path = invoker.application_path
 
     script = mac_app_script
 
-    outputs = [
-      "$_application_path/_CodeSignature/CodeResources",
-    ]
+    outputs = [ "$_application_path/_CodeSignature/CodeResources" ]
 
     args = [
       "codesign",
@@ -50,9 +46,7 @@ template("process_nibs_mac") {
 
     invoker_out_dir = invoker.output_dir
 
-    outputs = [
-      "$root_build_dir/$invoker_out_dir/{{source_name_part}}.nib",
-    ]
+    outputs = [ "$root_build_dir/$invoker_out_dir/{{source_name_part}}.nib" ]
 
     args = [
       "nib",
@@ -80,9 +74,7 @@ template("resource_copy_mac") {
   copy(target_name) {
     set_sources_assignment_filter([])
     sources = _resources
-    outputs = [
-      "$root_build_dir/$_app_name.app/$_bundle_directory/Contents/Resources/{{source_file_part}}",
-    ]
+    outputs = [ "$root_build_dir/$_app_name.app/$_bundle_directory/Contents/Resources/{{source_file_part}}" ]
 
     if (defined(invoker.deps)) {
       deps = invoker.deps
@@ -116,9 +108,7 @@ template("mac_app") {
     script = mac_app_script
 
     sources = []
-    outputs = [
-      "$root_build_dir/$app_name.app",
-    ]
+    outputs = [ "$root_build_dir/$app_name.app" ]
 
     args = [
       "structure",
@@ -145,12 +135,8 @@ template("mac_app") {
   action(plist_gen_target_name) {
     script = mac_app_script
 
-    sources = [
-      invoker.info_plist,
-    ]
-    outputs = [
-      "$root_build_dir/plist/$app_name/Info.plist",
-    ]
+    sources = [ invoker.info_plist ]
+    outputs = [ "$root_build_dir/plist/$app_name/Info.plist" ]
 
     args = [
       "plist",
@@ -165,32 +151,21 @@ template("mac_app") {
 
   copy_plist_gen_target_name = target_name + "_plist_copy"
   copy(copy_plist_gen_target_name) {
-    sources = [
-      "$root_build_dir/plist/$app_name/Info.plist",
-    ]
+    sources = [ "$root_build_dir/plist/$app_name/Info.plist" ]
 
-    outputs = [
-      "$root_build_dir/$app_name.app/Contents/{{source_file_part}}",
-    ]
+    outputs = [ "$root_build_dir/$app_name.app/Contents/{{source_file_part}}" ]
 
-    deps = [
-      ":$plist_gen_target_name",
-    ]
+    deps = [ ":$plist_gen_target_name" ]
   }
 
   copy_bin_target_name = target_name + "_bin_copy"
   copy(copy_bin_target_name) {
-    sources = [
-      "$root_build_dir/$app_name",
-    ]
+    sources = [ "$root_build_dir/$app_name" ]
 
-    outputs = [
-      "$root_build_dir/$app_name.app/Contents/MacOS/{{source_file_part}}",
-    ]
+    outputs =
+        [ "$root_build_dir/$app_name.app/Contents/MacOS/{{source_file_part}}" ]
 
-    deps = [
-      ":$bin_gen_target_name",
-    ]
+    deps = [ ":$bin_gen_target_name" ]
   }
 
   copy_xib_target_name = target_name + "_xib_copy"
@@ -213,8 +188,6 @@ template("mac_app") {
   # Top level group
 
   group(target_name) {
-    deps = [
-      ":$copy_all_target_name",
-    ]
+    deps = [ ":$copy_all_target_name" ]
   }
 }
diff --git a/build/config/sanitizers/BUILD.gn b/build/config/sanitizers/BUILD.gn
index 160545aaefa..31e9cf2ef82 100644
--- a/build/config/sanitizers/BUILD.gn
+++ b/build/config/sanitizers/BUILD.gn
@@ -8,9 +8,7 @@ import("//build/config/sanitizers/sanitizers.gni")
 # shared_libraries. Unconditionally depend upon this target as it is empty if
 # |is_asan|, |is_lsan|, |is_tsan|, |is_msan| and |use_custom_libcxx| are false.
 group("deps") {
-  deps = [
-    "//third_party/instrumented_libraries:deps",
-  ]
+  deps = [ "//third_party/instrumented_libraries:deps" ]
   if (is_asan || is_lsan || is_msan || is_tsan || is_ubsan) {
     public_configs = [ ":sanitizer_options_link_helper" ]
     deps += [ ":options_sources" ]
@@ -44,9 +42,7 @@ source_set("options_sources") {
     ":deps",
     "//:gn_visibility",
   ]
-  sources = [
-    "//build/sanitizers/sanitizer_options.cc",
-  ]
+  sources = [ "//build/sanitizers/sanitizer_options.cc" ]
 
   if (is_asan) {
     sources += [ "//build/sanitizers/asan_suppressions.cc" ]
diff --git a/build/config/sysroot.gni b/build/config/sysroot.gni
index 52a1b83d7dd..092022a9fea 100644
--- a/build/config/sysroot.gni
+++ b/build/config/sysroot.gni
@@ -16,13 +16,17 @@ declare_args() {
 
 if (is_linux && dart_use_debian_sysroot) {
   if (current_cpu == "x86") {
-    target_sysroot = rebase_path("//build/linux/debian_jessie_i386-sysroot", root_build_dir)
+    target_sysroot =
+        rebase_path("//build/linux/debian_jessie_i386-sysroot", root_build_dir)
   } else if (current_cpu == "x64") {
-    target_sysroot = rebase_path("//build/linux/debian_jessie_amd64-sysroot", root_build_dir)
+    target_sysroot =
+        rebase_path("//build/linux/debian_jessie_amd64-sysroot", root_build_dir)
   } else if (current_cpu == "arm") {
-    target_sysroot = rebase_path("//build/linux/debian_jessie_arm-sysroot", root_build_dir)
+    target_sysroot =
+        rebase_path("//build/linux/debian_jessie_arm-sysroot", root_build_dir)
   } else if (current_cpu == "arm64") {
-    target_sysroot = rebase_path("//build/linux/debian_jessie_arm64-sysroot", root_build_dir)
+    target_sysroot =
+        rebase_path("//build/linux/debian_jessie_arm64-sysroot", root_build_dir)
   } else {
     print("There is no Debian sysroot present for $current_cpu")
     assert(false)
diff --git a/build/config/templates/templates.gni b/build/config/templates/templates.gni
index 72d09c0e75c..cd310ce0d42 100644
--- a/build/config/templates/templates.gni
+++ b/build/config/templates/templates.gni
@@ -38,9 +38,7 @@ template("file_template") {
     script = "//build/android/gyp/jinja_template.py"
     depfile = "$target_gen_dir/$target_name.d"
 
-    sources = [
-      invoker.input,
-    ]
+    sources = [ invoker.input ]
     outputs = [
       invoker.output,
       depfile,
diff --git a/build/dart/copy_tree.gni b/build/dart/copy_tree.gni
index 580d711f926..a17e52976af 100644
--- a/build/dart/copy_tree.gni
+++ b/build/dart/copy_tree.gni
@@ -74,14 +74,14 @@ template("copy_trees") {
   foreach(copy_tree_spec, sources) {
     copy_tree_source_paths += [
       rebase_path(copy_tree_spec.source),
-      copy_tree_spec.ignore_patterns
+      copy_tree_spec.ignore_patterns,
     ]
   }
 
   # Evaluate script output as GN, producing a scope containing a single value
   # "sources"
   copy_tree_inputs_scope = exec_script("$_dart_root/tools/copy_tree.py",
-                                       ["--gn"] + copy_tree_source_paths,
+                                       [ "--gn" ] + copy_tree_source_paths,
                                        "scope")
 
   # A list of lists of input source files for copy_tree.
diff --git a/build/dart/dart_action.gni b/build/dart/dart_action.gni
index 8fa5e57f6e5..2058f0334c3 100644
--- a/build/dart/dart_action.gni
+++ b/build/dart/dart_action.gni
@@ -74,9 +74,7 @@ template("_compiled_action") {
     # Add the executable itself as an input.
     inputs += [ host_executable ]
 
-    deps = [
-      host_tool,
-    ]
+    deps = [ host_tool ]
     if (defined(invoker.deps)) {
       deps += invoker.deps
     }
diff --git a/build/dart/prebuilt_dart_sdk.gni b/build/dart/prebuilt_dart_sdk.gni
index bdb9ebf7e9d..906822e2329 100644
--- a/build/dart/prebuilt_dart_sdk.gni
+++ b/build/dart/prebuilt_dart_sdk.gni
@@ -12,7 +12,12 @@ _prebuilt_dart_exe =
 # When the first argument is "exec_script", gn_run_binary.py always exits with
 # status 0, but gives non-empty output when the command it is given fails.
 _prebuilt_dart_exe_trial = exec_script("../gn_run_binary.py",
-    ["exec_script", _prebuilt_dart_exe, "--version"], "string")
+                                       [
+                                         "exec_script",
+                                         _prebuilt_dart_exe,
+                                         "--version",
+                                       ],
+                                       "string")
 if (_prebuilt_dart_exe_trial == "") {
   prebuilt_dart_exe_works = true
 } else {
diff --git a/build/rust/rust.gni b/build/rust/rust.gni
index 6b4caf17a1c..caabcc82f67 100644
--- a/build/rust/rust.gni
+++ b/build/rust/rust.gni
@@ -11,8 +11,10 @@ template("rust_library") {
   cmd = [
     rebase_path("//buildtools/${current_os}-${current_cpu}/rust/bin/cargo"),
     "build",
-    "--target-dir", rebase_path(target_out_dir),
-    "--manifest-path", manifest,
+    "--target-dir",
+    rebase_path(target_out_dir),
+    "--manifest-path",
+    manifest,
   ]
   output = "$target_out_dir/lib${invoker.lib_name}.a"
   debug = defined(invoker.debug) && invoker.debug
diff --git a/build/sanitizers/BUILD.gn b/build/sanitizers/BUILD.gn
index 4f81f3ebadd..f90faa580f9 100644
--- a/build/sanitizers/BUILD.gn
+++ b/build/sanitizers/BUILD.gn
@@ -6,19 +6,13 @@ if (is_linux && !is_chromeos) {
   # TODO(GYP): Figure out which of these work and are needed on other platforms.
   copy("copy_llvm_symbolizer") {
     if (is_win) {
-      sources = [
-        "//third_party/llvm-build/Release+Asserts/bin/llvm-symbolizer.exe",
-      ]
-      outputs = [
-        "$root_out_dir/llvm-symbolizer.exe",
-      ]
+      sources =
+          [ "//third_party/llvm-build/Release+Asserts/bin/llvm-symbolizer.exe" ]
+      outputs = [ "$root_out_dir/llvm-symbolizer.exe" ]
     } else {
-      sources = [
-        "//third_party/llvm-build/Release+Asserts/bin/llvm-symbolizer",
-      ]
-      outputs = [
-        "$root_out_dir/llvm-symbolizer",
-      ]
+      sources =
+          [ "//third_party/llvm-build/Release+Asserts/bin/llvm-symbolizer" ]
+      outputs = [ "$root_out_dir/llvm-symbolizer" ]
     }
   }
 }
diff --git a/build/secondary/third_party/android_tools/BUILD.gn b/build/secondary/third_party/android_tools/BUILD.gn
index 5f803c954c6..8f0799c8675 100644
--- a/build/secondary/third_party/android_tools/BUILD.gn
+++ b/build/secondary/third_party/android_tools/BUILD.gn
@@ -16,13 +16,12 @@ config("cpu_features_warnings") {
 }
 
 source_set("cpu_features") {
-  sources = [
-    "$android_ndk_root/sources/android/cpufeatures/cpu-features.c",
-  ]
+  sources = [ "$android_ndk_root/sources/android/cpufeatures/cpu-features.c" ]
   public_configs = [ ":cpu_features_include" ]
   configs -= [ "//build/config/compiler:chromium_code" ]
   configs += [
     "//build/config/compiler:no_chromium_code",
+
     # Must be after no_chromium_code for warning flags to be ordered correctly.
     ":cpu_features_warnings",
   ]
diff --git a/build/toolchain/android/BUILD.gn b/build/toolchain/android/BUILD.gn
index 8568ef7a4da..123c9c431be 100644
--- a/build/toolchain/android/BUILD.gn
+++ b/build/toolchain/android/BUILD.gn
@@ -4,8 +4,8 @@
 
 import("//build/config/sysroot.gni")  # Imports android/config.gni.
 import("//build/toolchain/ccache.gni")
-import("//build/toolchain/goma.gni")
 import("//build/toolchain/gcc_toolchain.gni")
+import("//build/toolchain/goma.gni")
 
 # The Android GCC toolchains share most of the same parameters, so we have this
 # wrapper around gcc_toolchain to avoid duplication of logic.
diff --git a/build/toolchain/gcc_toolchain.gni b/build/toolchain/gcc_toolchain.gni
index 3689187f7f6..0d749661bda 100644
--- a/build/toolchain/gcc_toolchain.gni
+++ b/build/toolchain/gcc_toolchain.gni
@@ -101,9 +101,8 @@ template("gcc_toolchain") {
       command = "$cc -MMD -MF $depfile {{defines}} {{include_dirs}} {{cflags}} {{cflags_c}} -c {{source}} -o {{output}}"
       depsformat = "gcc"
       description = "CC {{output}}"
-      outputs = [
-        "{{source_out_dir}}/{{target_output_name}}.{{source_name_part}}.o",
-      ]
+      outputs =
+          [ "{{source_out_dir}}/{{target_output_name}}.{{source_name_part}}.o" ]
     }
 
     tool("cxx") {
@@ -111,9 +110,8 @@ template("gcc_toolchain") {
       command = "$cxx -MMD -MF $depfile {{defines}} {{include_dirs}} {{cflags}} {{cflags_cc}} -c {{source}} -o {{output}}"
       depsformat = "gcc"
       description = "CXX {{output}}"
-      outputs = [
-        "{{source_out_dir}}/{{target_output_name}}.{{source_name_part}}.o",
-      ]
+      outputs =
+          [ "{{source_out_dir}}/{{target_output_name}}.{{source_name_part}}.o" ]
     }
 
     tool("asm") {
@@ -122,9 +120,8 @@ template("gcc_toolchain") {
       command = "$cc -MMD -MF $depfile {{defines}} {{include_dirs}} {{asmflags}} -c {{source}} -o {{output}}"
       depsformat = "gcc"
       description = "ASM {{output}}"
-      outputs = [
-        "{{source_out_dir}}/{{target_output_name}}.{{source_name_part}}.o",
-      ]
+      outputs =
+          [ "{{source_out_dir}}/{{target_output_name}}.{{source_name_part}}.o" ]
     }
 
     tool("alink") {
@@ -132,9 +129,8 @@ template("gcc_toolchain") {
       command = "rm -f {{output}} && $ar rcs {{output}} @$rspfile"
       description = "AR {{output}}"
       rspfile_content = "{{inputs}}"
-      outputs = [
-        "{{target_out_dir}}/{{target_output_name}}{{output_extension}}",
-      ]
+      outputs =
+          [ "{{target_out_dir}}/{{target_output_name}}{{output_extension}}" ]
       default_output_extension = ".a"
       output_prefix = "lib"
     }
@@ -208,8 +204,7 @@ template("gcc_toolchain") {
         command += " && " + strip_command
       } else if (defined(invoker.llvm_objcopy)) {
         strip = invoker.llvm_objcopy
-        strip_command =
-            "${strip} --strip-all $outfile $stripped_outfile"
+        strip_command = "${strip} --strip-all $outfile $stripped_outfile"
         command += " && " + strip_command
       }
       if (defined(invoker.postlink)) {
@@ -217,9 +212,7 @@ template("gcc_toolchain") {
       }
       description = "LINK $outfile"
       rspfile_content = "{{inputs}}"
-      outputs = [
-        outfile,
-      ]
+      outputs = [ outfile ]
       if (defined(invoker.strip) || defined(invoker.llvm_objcopy)) {
         outputs += [ stripped_outfile ]
       }
diff --git a/build/toolchain/mac/BUILD.gn b/build/toolchain/mac/BUILD.gn
index ef4b8a56f32..48ef70243f4 100644
--- a/build/toolchain/mac/BUILD.gn
+++ b/build/toolchain/mac/BUILD.gn
@@ -6,13 +6,13 @@
 # some enhancements since the commands on Mac are slightly different than on
 # Linux.
 
-import("../goma.gni")
 import("//build/config/mac/mac_sdk.gni")
+import("../goma.gni")
 
 assert(host_os == "mac")
 
-import("//build/toolchain/goma.gni")
 import("//build/config/sysroot.gni")
+import("//build/toolchain/goma.gni")
 
 if (use_goma) {
   goma_prefix = "$goma_dir/gomacc "
@@ -61,9 +61,8 @@ template("mac_toolchain") {
       command = "$cc -MMD -MF $depfile {{defines}} {{include_dirs}} $sysroot_flags $toolchain_flags {{cflags}} {{cflags_c}} -c {{source}} -o {{output}}"
       depsformat = "gcc"
       description = "CC {{output}}"
-      outputs = [
-        "{{source_out_dir}}/{{target_output_name}}.{{source_name_part}}.o",
-      ]
+      outputs =
+          [ "{{source_out_dir}}/{{target_output_name}}.{{source_name_part}}.o" ]
     }
 
     tool("cxx") {
@@ -71,9 +70,8 @@ template("mac_toolchain") {
       command = "$cxx -MMD -MF $depfile {{defines}} {{include_dirs}} $sysroot_flags $toolchain_flags {{cflags}} {{cflags_cc}} -c {{source}} -o {{output}}"
       depsformat = "gcc"
       description = "CXX {{output}}"
-      outputs = [
-        "{{source_out_dir}}/{{target_output_name}}.{{source_name_part}}.o",
-      ]
+      outputs =
+          [ "{{source_out_dir}}/{{target_output_name}}.{{source_name_part}}.o" ]
     }
 
     tool("asm") {
@@ -82,9 +80,8 @@ template("mac_toolchain") {
       command = "$cc -MMD -MF $depfile {{defines}} {{include_dirs}} $sysroot_flags $toolchain_flags {{asmflags}} -c {{source}} -o {{output}}"
       depsformat = "gcc"
       description = "ASM {{output}}"
-      outputs = [
-        "{{source_out_dir}}/{{target_output_name}}.{{source_name_part}}.o",
-      ]
+      outputs =
+          [ "{{source_out_dir}}/{{target_output_name}}.{{source_name_part}}.o" ]
     }
 
     tool("objc") {
@@ -92,9 +89,8 @@ template("mac_toolchain") {
       command = "$cxx -MMD -MF $depfile {{defines}} {{include_dirs}} $sysroot_flags $toolchain_flags {{cflags}} {{cflags_c}} {{cflags_objc}} -c {{source}} -o {{output}}"
       depsformat = "gcc"
       description = "OBJC {{output}}"
-      outputs = [
-        "{{source_out_dir}}/{{target_output_name}}.{{source_name_part}}.o",
-      ]
+      outputs =
+          [ "{{source_out_dir}}/{{target_output_name}}.{{source_name_part}}.o" ]
     }
 
     tool("objcxx") {
@@ -102,9 +98,8 @@ template("mac_toolchain") {
       command = "$cxx -MMD -MF $depfile {{defines}} {{include_dirs}} $sysroot_flags $toolchain_flags {{cflags}} {{cflags_cc}} {{cflags_objcc}} -c {{source}} -o {{output}}"
       depsformat = "gcc"
       description = "OBJCXX {{output}}"
-      outputs = [
-        "{{source_out_dir}}/{{target_output_name}}.{{source_name_part}}.o",
-      ]
+      outputs =
+          [ "{{source_out_dir}}/{{target_output_name}}.{{source_name_part}}.o" ]
     }
 
     tool("alink") {
@@ -112,15 +107,15 @@ template("mac_toolchain") {
       command = "rm -f {{output}} && $ar rcs {{output}} @$rspfile"
       description = "AR {{output}}"
       rspfile_content = "{{inputs}}"
-      outputs = [
-        "{{target_out_dir}}/{{target_output_name}}{{output_extension}}",
-      ]
+      outputs =
+          [ "{{target_out_dir}}/{{target_output_name}}{{output_extension}}" ]
       default_output_extension = ".a"
       output_prefix = "lib"
     }
 
     tool("solink") {
-      dylib = "{{root_out_dir}}/{{target_output_name}}{{output_extension}}"  # eg "./libfoo.dylib"
+      dylib = "{{root_out_dir}}/{{target_output_name}}{{output_extension}}"  # eg
+                                                                             # "./libfoo.dylib"
       rspfile = dylib + ".rsp"
 
       # These variables are not build into GN but are helpers that implement
@@ -185,9 +180,7 @@ template("mac_toolchain") {
 
       description = "LINK $outfile"
       rspfile_content = "{{inputs_newline}}"
-      outputs = [
-        outfile,
-      ]
+      outputs = [ outfile ]
       if (defined(invoker.strip)) {
         outputs += [ stripped_outfile ]
       }
diff --git a/build/toolchain/win/BUILD.gn b/build/toolchain/win/BUILD.gn
index ea348b68507..a053de1eb15 100644
--- a/build/toolchain/win/BUILD.gn
+++ b/build/toolchain/win/BUILD.gn
@@ -138,9 +138,10 @@ template("msvc_toolchain") {
     }
 
     tool("solink") {
-      dllname = "{{root_out_dir}}/{{target_output_name}}{{output_extension}}"  # e.g. foo.dll
-      libname =
-          "{{root_out_dir}}/{{target_output_name}}{{output_extension}}.lib"  # e.g. foo.dll.lib
+      dllname = "{{root_out_dir}}/{{target_output_name}}{{output_extension}}"  # e.g.
+                                                                               # foo.dll
+      libname = "{{root_out_dir}}/{{target_output_name}}{{output_extension}}.lib"  # e.g.
+                                                                                   # foo.dll.lib
       rspfile = "${dllname}.rsp"
 
       link_command = "$python_path $tool_wrapper_path link-wrapper $env False link.exe /nologo /IMPLIB:$libname /DLL /OUT:$dllname /PDB:${dllname}.pdb @$rspfile"
@@ -165,7 +166,9 @@ template("msvc_toolchain") {
     }
 
     tool("solink_module") {
-      dllname = "{{output_dir}}/{{target_output_name}}{{output_extension}}"  # e.g. foo.dll
+      dllname =
+          "{{output_dir}}/{{target_output_name}}{{output_extension}}"  # e.g.
+                                                                       # foo.dll
       pdbname = "${dllname}.pdb"
       rspfile = "${dllname}.rsp"
 
diff --git a/pkg/BUILD.gn b/pkg/BUILD.gn
index bd7eb4ca87a..173b32fef58 100644
--- a/pkg/BUILD.gn
+++ b/pkg/BUILD.gn
@@ -55,9 +55,7 @@ action("pkg_files_stamp") {
 
   inputs = stamp0_outputs + stamp1_outputs + stamp2_outputs + stamp3_outputs
 
-  outputs = [
-    "$root_gen_dir/pkg_files.stamp",
-  ]
+  outputs = [ "$root_gen_dir/pkg_files.stamp" ]
 
   script = "../tools/create_timestamp_file.py"
   args = [ rebase_path("$root_gen_dir/pkg_files.stamp") ]
diff --git a/runtime/BUILD.gn b/runtime/BUILD.gn
index a5bdc9c61a9..88b27a9d054 100644
--- a/runtime/BUILD.gn
+++ b/runtime/BUILD.gn
@@ -211,8 +211,8 @@ source_set("dart_api") {
 library_for_all_configs("libdart") {
   target_type = dart_component_kind
   extra_deps = [
-    "third_party/double-conversion/src:libdouble_conversion",
     ":generate_version_cc_file",
+    "third_party/double-conversion/src:libdouble_conversion",
   ]
   if (dart_enable_wasm) {
     extra_deps += [ "//third_party/wasmer" ]
@@ -260,9 +260,7 @@ action("generate_version_cc_file") {
     inputs += [ "$default_git_folder/logs/HEAD" ]
   }
   output = "$target_gen_dir/version.cc"
-  outputs = [
-    output,
-  ]
+  outputs = [ output ]
 
   script = "../tools/make_version.py"
   args = [
diff --git a/runtime/bin/BUILD.gn b/runtime/bin/BUILD.gn
index 14b40c7b714..69363cf233d 100644
--- a/runtime/bin/BUILD.gn
+++ b/runtime/bin/BUILD.gn
@@ -43,13 +43,9 @@ template("build_libdart_builtin") {
     deps = []
     if (is_fuchsia) {
       if (using_fuchsia_sdk) {
-        public_deps = [
-          "$fuchsia_sdk_root/pkg:fdio",
-        ]
+        public_deps = [ "$fuchsia_sdk_root/pkg:fdio" ]
       } else {
-        public_deps = [
-          "//zircon/public/lib/fdio",
-        ]
+        public_deps = [ "//zircon/public/lib/fdio" ]
       }
     }
     include_dirs = [ ".." ]
@@ -106,9 +102,7 @@ static_library("crashpad") {
     "..:dart_os_fuchsia_config",
   ]
   include_dirs = [ ".." ]
-  sources = [
-    "crashpad.cc",
-  ]
+  sources = [ "crashpad.cc" ]
 
   if (dart_use_crashpad) {
     assert(is_win, "dart_use_crashpad is only supported on Windows")
@@ -142,15 +136,11 @@ template("build_elf_loader") {
 }
 
 build_elf_loader("elf_loader") {
-  deps = [
-    ":libdart_builtin",
-  ]
+  deps = [ ":libdart_builtin" ]
 }
 
 build_elf_loader("elf_loader_product") {
-  deps = [
-    ":libdart_builtin_product",
-  ]
+  deps = [ ":libdart_builtin_product" ]
 }
 
 template("build_gen_snapshot") {
@@ -241,8 +231,8 @@ build_gen_snapshot("gen_snapshot") {
   extra_deps = [
     ":gen_snapshot_dart_io",
     ":libdart_builtin",
-    "../platform:libdart_platform_precompiler",
     "..:libdart_precompiler",
+    "../platform:libdart_platform_precompiler",
   ]
 }
 
@@ -255,8 +245,8 @@ build_gen_snapshot("gen_snapshot_product") {
   extra_deps = [
     ":gen_snapshot_dart_io_product",
     ":libdart_builtin_product",
-    "../platform:libdart_platform_precompiler_product",
     "..:libdart_precompiler_product",
+    "../platform:libdart_platform_precompiler_product",
   ]
 }
 
@@ -269,8 +259,8 @@ build_gen_snapshot("gen_snapshot_fuchsia") {
   extra_deps = [
     ":gen_snapshot_dart_io_fuchsia",
     ":libdart_builtin_fuchsia",
-    "../platform:libdart_platform_precompiler_fuchsia",
     "..:libdart_precompiler_fuchsia",
+    "../platform:libdart_platform_precompiler_fuchsia",
   ]
 }
 
@@ -283,8 +273,8 @@ build_gen_snapshot("gen_snapshot_product_fuchsia") {
   extra_deps = [
     ":gen_snapshot_dart_io_product_fuchsia",
     ":libdart_builtin_product_fuchsia",
-    "../platform:libdart_platform_precompiler_product_fuchsia",
     "..:libdart_precompiler_product_fuchsia",
+    "../platform:libdart_platform_precompiler_product_fuchsia",
   ]
 }
 
@@ -293,8 +283,8 @@ build_gen_snapshot("gen_snapshot_host_targeting_host") {
   extra_deps = [
     ":gen_snapshot_dart_io_host_targeting_host",
     ":libdart_builtin_host_targeting_host",
-    "../platform:libdart_platform_precompiler_host_targeting_host",
     "..:libdart_precompiler_host_targeting_host",
+    "../platform:libdart_platform_precompiler_host_targeting_host",
   ]
 }
 
@@ -303,8 +293,8 @@ build_gen_snapshot("gen_snapshot_product_host_targeting_host") {
   extra_deps = [
     ":gen_snapshot_dart_io_host_targeting_host",
     ":libdart_builtin_host_targeting_host",
-    "../platform:libdart_platform_precompiler_host_targeting_host",
     "..:libdart_precompiler_host_targeting_host",
+    "../platform:libdart_platform_precompiler_host_targeting_host",
   ]
 }
 
@@ -328,17 +318,13 @@ template("build_gen_snapshot_dart_io") {
           "$fuchsia_sdk_root/fidl:fuchsia.netstack",
           "$fuchsia_sdk_root/pkg:sys_cpp",
         ]
-        public_deps = [
-          "$fuchsia_sdk_root/pkg:fdio",
-        ]
+        public_deps = [ "$fuchsia_sdk_root/pkg:fdio" ]
       } else {
         deps += [
           "//sdk/fidl/fuchsia.netstack",
           "//sdk/lib/sys/cpp",
         ]
-        public_deps = [
-          "//zircon/public/lib/fdio",
-        ]
+        public_deps = [ "//zircon/public/lib/fdio" ]
       }
     }
 
@@ -468,17 +454,13 @@ template("dart_io") {
           "$fuchsia_sdk_root/fidl:fuchsia.netstack",
           "$fuchsia_sdk_root/pkg:sys_cpp",
         ]
-        public_deps = [
-          "$fuchsia_sdk_root/pkg:fdio",
-        ]
+        public_deps = [ "$fuchsia_sdk_root/pkg:fdio" ]
       } else {
         deps += [
           "//sdk/fidl/fuchsia.netstack",
           "//sdk/lib/sys/cpp",
         ]
-        public_deps = [
-          "//zircon/public/lib/fdio",
-        ]
+        public_deps = [ "//zircon/public/lib/fdio" ]
       }
     }
 
@@ -507,9 +489,9 @@ template("dart_io") {
 dart_io("dart_io_api") {
   extra_configs = [ "..:dart_maybe_product_config" ]
   extra_sources = [
+    "../include/bin/dart_io_api.h",
     "builtin.cc",
     "dart_io_api_impl.cc",
-    "../include/bin/dart_io_api.h",
   ]
   extra_deps = [ ":libdart_builtin" ]
 }
@@ -517,9 +499,9 @@ dart_io("dart_io_api") {
 dart_io("dart_io_api_product") {
   extra_configs = [ "..:dart_product_config" ]
   extra_sources = [
+    "../include/bin/dart_io_api.h",
     "builtin.cc",
     "dart_io_api_impl.cc",
-    "../include/bin/dart_io_api.h",
   ]
   extra_deps = [ ":libdart_builtin_product" ]
 }
@@ -531,9 +513,7 @@ dart_io("standalone_dart_io") {
 }
 
 gen_snapshot_action("generate_snapshot_bin") {
-  deps = [
-    "../vm:vm_platform_stripped",
-  ]
+  deps = [ "../vm:vm_platform_stripped" ]
   vm_snapshot_data = "$target_gen_dir/vm_snapshot_data.bin"
   vm_snapshot_instructions = "$target_gen_dir/vm_snapshot_instructions.bin"
   isolate_snapshot_data = "$target_gen_dir/isolate_snapshot_data.bin"
@@ -541,9 +521,7 @@ gen_snapshot_action("generate_snapshot_bin") {
       "$target_gen_dir/isolate_snapshot_instructions.bin"
 
   platform_dill = "$root_out_dir/vm_platform_strong_stripped.dill"
-  inputs = [
-    platform_dill,
-  ]
+  inputs = [ platform_dill ]
   outputs = [
     vm_snapshot_data,
     vm_snapshot_instructions,
@@ -602,12 +580,8 @@ template("bin_to_assembly") {
     if (invoker.executable) {
       args += [ "--executable" ]
     }
-    inputs = [
-      invoker.input,
-    ]
-    outputs = [
-      output,
-    ]
+    inputs = [ invoker.input ]
+    outputs = [ output ]
   }
 }
 
@@ -646,12 +620,8 @@ template("bin_to_coff") {
     if (current_cpu == "x64") {
       args += [ "--64-bit" ]
     }
-    inputs = [
-      invoker.input,
-    ]
-    outputs = [
-      output,
-    ]
+    inputs = [ invoker.input ]
+    outputs = [ output ]
   }
 }
 
@@ -670,45 +640,35 @@ template("bin_to_linkable") {
 }
 
 bin_to_linkable("vm_snapshot_data_linkable") {
-  deps = [
-    ":generate_snapshot_bin",
-  ]
+  deps = [ ":generate_snapshot_bin" ]
   input = "$target_gen_dir/vm_snapshot_data.bin"
   symbol = "kDartVmSnapshotData"
   executable = false
 }
 
 bin_to_linkable("vm_snapshot_instructions_linkable") {
-  deps = [
-    ":generate_snapshot_bin",
-  ]
+  deps = [ ":generate_snapshot_bin" ]
   input = "$target_gen_dir/vm_snapshot_instructions.bin"
   symbol = "kDartVmSnapshotInstructions"
   executable = true
 }
 
 bin_to_linkable("isolate_snapshot_data_linkable") {
-  deps = [
-    ":generate_snapshot_bin",
-  ]
+  deps = [ ":generate_snapshot_bin" ]
   input = "$target_gen_dir/isolate_snapshot_data.bin"
   symbol = "kDartCoreIsolateSnapshotData"
   executable = false
 }
 
 bin_to_linkable("isolate_snapshot_instructions_linkable") {
-  deps = [
-    ":generate_snapshot_bin",
-  ]
+  deps = [ ":generate_snapshot_bin" ]
   input = "$target_gen_dir/isolate_snapshot_instructions.bin"
   symbol = "kDartCoreIsolateSnapshotInstructions"
   executable = true
 }
 
 bin_to_linkable("kernel_service_dill_linkable") {
-  deps = [
-    "../../utils/kernel-service:kernel_service_dill",
-  ]
+  deps = [ "../../utils/kernel-service:kernel_service_dill" ]
   input = "$root_gen_dir/kernel_service.dill"
   symbol = "kKernelServiceDill"
   size_symbol = "kKernelServiceDillSize"
@@ -716,9 +676,7 @@ bin_to_linkable("kernel_service_dill_linkable") {
 }
 
 bin_to_linkable("platform_strong_dill_linkable") {
-  deps = [
-    "../vm:vm_platform",
-  ]
+  deps = [ "../vm:vm_platform" ]
   input = "$root_out_dir/vm_platform_strong.dill"
   symbol = "kPlatformStrongDill"
   size_symbol = "kPlatformStrongDillSize"
@@ -758,9 +716,7 @@ action("generate_abi_version_cc_file") {
     "abi_version_in.cc",
   ]
   output = "$target_gen_dir/abi_version.cc"
-  outputs = [
-    output,
-  ]
+  outputs = [ output ]
 
   script = "../../tools/make_version.py"
   args = [
@@ -878,9 +834,9 @@ template("dart_executable") {
 
 dart_executable("dart") {
   extra_deps = [
+    ":dart_snapshot_cc",
     "..:libdart_jit",
     "../platform:libdart_platform_jit",
-    ":dart_snapshot_cc",
   ]
   if (dart_runtime_mode != "release") {
     extra_deps += [ "../observatory:standalone_observatory_archive" ]
@@ -930,22 +886,16 @@ dart_executable("dart_precompiled_runtime") {
 }
 
 executable("process_test") {
-  sources = [
-    "process_test.cc",
-  ]
+  sources = [ "process_test.cc" ]
 }
 
 prebuilt_dart_action("gen_kernel_bytecode_dill") {
-  deps = [
-    "../vm:vm_platform",
-  ]
+  deps = [ "../vm:vm_platform" ]
   platform_dill = "$root_out_dir/vm_platform_strong.dill"
 
   output = "$root_out_dir/gen_kernel_bytecode.dill"
   depfile = "$target_gen_dir/gen_kernel_bytecode.dill.d"
-  outputs = [
-    output,
-  ]
+  outputs = [ output ]
 
   script = "../../pkg/vm/bin/gen_kernel.dart"
 
@@ -1059,9 +1009,7 @@ executable("run_vm_tests") {
 }
 
 shared_library("test_extension") {
-  deps = [
-    ":dart",
-  ]
+  deps = [ ":dart" ]
   sources = [
     "test_extension.c",
     "test_extension_dllmain_win.cc",
@@ -1082,9 +1030,7 @@ shared_library("test_extension") {
 }
 
 shared_library("entrypoints_verification_test_extension") {
-  deps = [
-    ":dart",
-  ]
+  deps = [ ":dart" ]
   sources = [
     "entrypoints_verification_test_extension.cc",
     "entrypoints_verification_test_extension_dllmain_win.cc",
@@ -1105,12 +1051,8 @@ shared_library("entrypoints_verification_test_extension") {
 }
 
 shared_library("ffi_test_dynamic_library") {
-  deps = [
-    ":dart",
-  ]
-  sources = [
-    "ffi_test/ffi_test_dynamic_library.cc",
-  ]
+  deps = [ ":dart" ]
+  sources = [ "ffi_test/ffi_test_dynamic_library.cc" ]
   include_dirs = [ ".." ]
   defines = [
     # The only effect of DART_SHARED_LIB is to export the Dart API.
@@ -1128,9 +1070,7 @@ shared_library("ffi_test_dynamic_library") {
 }
 
 shared_library("ffi_test_functions") {
-  deps = [
-    ":dart",
-  ]
+  deps = [ ":dart" ]
 
   # The two files here do not depend on each other.
   # flutter/flutter integration tests will only use `ffi_test_functions.cc` -
@@ -1162,9 +1102,7 @@ shared_library("ffi_test_functions") {
 }
 
 shared_library("sample_extension") {
-  deps = [
-    ":dart",
-  ]
+  deps = [ ":dart" ]
   sources = [
     "../../samples/sample_extension/sample_extension.cc",
     "../../samples/sample_extension/sample_extension_dllmain_win.cc",
diff --git a/runtime/bin/builtin_impl_sources.gni b/runtime/bin/builtin_impl_sources.gni
index 385df57a706..fe0251fde2d 100644
--- a/runtime/bin/builtin_impl_sources.gni
+++ b/runtime/bin/builtin_impl_sources.gni
@@ -15,10 +15,10 @@ builtin_impl_sources = [
   "crypto_linux.cc",
   "crypto_macos.cc",
   "crypto_win.cc",
-  "dartutils.cc",
-  "dartutils.h",
   "dartdev_utils.cc",
   "dartdev_utils.h",
+  "dartutils.cc",
+  "dartutils.h",
   "directory.cc",
   "directory.h",
   "directory_android.cc",
@@ -26,10 +26,10 @@ builtin_impl_sources = [
   "directory_linux.cc",
   "directory_macos.cc",
   "directory_win.cc",
-  "exe_utils.h",
   "exe_utils.cc",
-  "extensions.h",
+  "exe_utils.h",
   "extensions.cc",
+  "extensions.h",
   "extensions_android.cc",
   "extensions_fuchsia.cc",
   "extensions_linux.cc",
diff --git a/runtime/bin/io_impl_sources.gni b/runtime/bin/io_impl_sources.gni
index e40832d134a..84a93ad3066 100644
--- a/runtime/bin/io_impl_sources.gni
+++ b/runtime/bin/io_impl_sources.gni
@@ -104,6 +104,6 @@ io_impl_sources = [
   "sync_socket_linux.cc",
   "sync_socket_macos.cc",
   "sync_socket_win.cc",
-  "typed_data_utils.h",
   "typed_data_utils.cc",
+  "typed_data_utils.h",
 ]
diff --git a/runtime/llvm_codegen/bit/BUILD.gn b/runtime/llvm_codegen/bit/BUILD.gn
index a7365c16c5f..a021ffe9d46 100644
--- a/runtime/llvm_codegen/bit/BUILD.gn
+++ b/runtime/llvm_codegen/bit/BUILD.gn
@@ -3,27 +3,19 @@
 # BSD-style license that can be found in the LICENSE file.
 
 executable("bit") {
-  sources = [
-    "main.cc",
-  ]
+  sources = [ "main.cc" ]
   root_dir = rebase_path(root_out_dir)
   clang_dir = rebase_path("//buildtools/linux-x64/clang/bin")
   defines = [
     "BIT_BINARY_DIR=\"$root_dir\"",
     "BIT_CLANG_DIR=\"$clang_dir\"",
   ]
-  deps = [
-    "../../../third_party/llvm:LLVMSupport",
-  ]
-  data_deps = [
-    "../codegen",
-  ]
+  deps = [ "../../../third_party/llvm:LLVMSupport" ]
+  data_deps = [ "../codegen" ]
 }
 
 source_set("test") {
-  sources = [
-    "test.cc",
-  ]
+  sources = [ "test.cc" ]
 
   root_dir = rebase_path(root_out_dir)
   clang_dir = rebase_path("//buildtools/linux-x64/clang/bin")
@@ -32,9 +24,7 @@ source_set("test") {
     "BIT_CLANG_DIR=\"$clang_dir\"",
   ]
 
-  deps = [
-    "../../../third_party/llvm:LLVMSupport",
-  ]
+  deps = [ "../../../third_party/llvm:LLVMSupport" ]
 
   include_dirs = [ "//runtime" ]
 
diff --git a/runtime/llvm_codegen/codegen/BUILD.gn b/runtime/llvm_codegen/codegen/BUILD.gn
index 4ccb309ee55..2e0a833b3f7 100644
--- a/runtime/llvm_codegen/codegen/BUILD.gn
+++ b/runtime/llvm_codegen/codegen/BUILD.gn
@@ -18,12 +18,8 @@ config("llvm") {
 }
 
 copy("lib_llvm") {
-  sources = [
-    _lib_llvm_so,
-  ]
-  outputs = [
-    "$root_out_dir/libLLVM-9svn.so",
-  ]
+  sources = [ _lib_llvm_so ]
+  outputs = [ "$root_out_dir/libLLVM-9svn.so" ]
   public_configs = [ ":llvm" ]
 }
 
diff --git a/runtime/llvm_codegen/test/BUILD.gn b/runtime/llvm_codegen/test/BUILD.gn
index b30e8403045..633d3dc0e1c 100644
--- a/runtime/llvm_codegen/test/BUILD.gn
+++ b/runtime/llvm_codegen/test/BUILD.gn
@@ -4,7 +4,7 @@
 
 group("test") {
   deps = [
-    "codegen",
     "bit",
+    "codegen",
   ]
 }
diff --git a/runtime/llvm_codegen/test/bit_test.gni b/runtime/llvm_codegen/test/bit_test.gni
index 77f65fe179b..6b19e62d8b0 100644
--- a/runtime/llvm_codegen/test/bit_test.gni
+++ b/runtime/llvm_codegen/test/bit_test.gni
@@ -21,21 +21,18 @@ template("bit_test") {
     script = "//runtime/llvm_codegen/test/run_bit.py"
     sources = invoker.tests
 
-    deps = [
-      "../../bit",
-    ]
-    inputs = [
-      "${root_out_dir}/bit$executable_suffix",
-    ]
+    deps = [ "../../bit" ]
+    inputs = [ "${root_out_dir}/bit$executable_suffix" ]
 
     # This output is always dirty so ninja will always run this step when asked to.
-    outputs = [
-      "$target_gen_dir/{{source_name_part}}}",
-    ]
+    outputs = [ "$target_gen_dir/{{source_name_part}}}" ]
     args = [
-      "--bit", rebase_path("${root_out_dir}/bit"),
-      "--test", "{{source}}",
-      "--out", rebase_path(target_gen_dir),
+      "--bit",
+      rebase_path("${root_out_dir}/bit"),
+      "--test",
+      "{{source}}",
+      "--out",
+      rebase_path(target_gen_dir),
     ]
   }
 }
diff --git a/runtime/observatory/BUILD.gn b/runtime/observatory/BUILD.gn
index 554e899599d..b47dce62309 100644
--- a/runtime/observatory/BUILD.gn
+++ b/runtime/observatory/BUILD.gn
@@ -16,9 +16,7 @@ prebuilt_dart2js_action("build_observatory") {
   inputs = [ ".packages" ] + observatory_sources
 
   output = "$target_gen_dir/observatory/web/main.dart.js"
-  outputs = [
-    output,
-  ]
+  outputs = [ output ]
   if (is_debug) {
     outputs += [ "$target_gen_dir/observatory/web/main.dart.js.map" ]
   }
@@ -159,18 +157,12 @@ copy_trees("copy_observatory_packages") {
 
 copy("copy_main_dart_js") {
   visibility = [ ":deploy_observatory" ]
-  deps = [
-    ":build_observatory",
-  ]
-  sources = [
-    "$target_gen_dir/observatory/web/main.dart.js",
-  ]
+  deps = [ ":build_observatory" ]
+  sources = [ "$target_gen_dir/observatory/web/main.dart.js" ]
   if (is_debug) {
     sources += [ "$target_gen_dir/observatory/web/main.dart.js.map" ]
   }
-  outputs = [
-    "$target_out_dir/observatory/deployed/web/{{source_file_part}}",
-  ]
+  outputs = [ "$target_out_dir/observatory/deployed/web/{{source_file_part}}" ]
 }
 
 group("deploy_observatory") {
@@ -190,16 +182,12 @@ template("observatory_archive") {
     enable_compression = true
   }
   action(target_name) {
-    deps = [
-      ":deploy_observatory",
-    ]
+    deps = [ ":deploy_observatory" ]
 
     output_name = target_name
 
     output = "$target_gen_dir/${output_name}.tar"
-    outputs = [
-      output,
-    ]
+    outputs = [ output ]
 
     script = "../tools/create_archive.py"
     args = [
@@ -220,18 +208,12 @@ observatory_archive("compressed_observatory_archive") {
 
 copy("copy_compressed_observatory_archive") {
   archive_target = ":compressed_observatory_archive"
-  deps = [
-    archive_target,
-  ]
+  deps = [ archive_target ]
   archive_dir = get_label_info(archive_target, "target_gen_dir")
   archive_name = get_label_info(archive_target, "name")
   archive_file = "${archive_dir}/${archive_name}.tar"
-  sources = [
-    archive_file,
-  ]
-  outputs = [
-    "$root_out_dir/${archive_name}.tar",
-  ]
+  sources = [ archive_file ]
+  outputs = [ "$root_out_dir/${archive_name}.tar" ]
 }
 
 observatory_archive("observatory_archive") {
@@ -240,18 +222,12 @@ observatory_archive("observatory_archive") {
 
 copy("copy_observatory_archive") {
   archive_target = ":observatory_archive"
-  deps = [
-    archive_target,
-  ]
+  deps = [ archive_target ]
   archive_dir = get_label_info(archive_target, "target_gen_dir")
   archive_name = get_label_info(archive_target, "name")
   archive_file = "${archive_dir}/${archive_name}.tar"
-  sources = [
-    archive_file,
-  ]
-  outputs = [
-    "$root_out_dir/${archive_name}.tar",
-  ]
+  sources = [ archive_file ]
+  outputs = [ "$root_out_dir/${archive_name}.tar" ]
 }
 
 # Generates a .cc file containing the bytes of the observatory archive in a C
@@ -277,14 +253,10 @@ template("observatory_archive_source") {
   action(target_name) {
     forward_variables_from(invoker, [ "deps" ])
 
-    inputs = [
-      invoker.archive_file,
-    ]
+    inputs = [ invoker.archive_file ]
 
     output = "$target_gen_dir/${target_name}.cc"
-    outputs = [
-      output,
-    ]
+    outputs = [ output ]
 
     script = "../tools/create_archive.py"
     args = [
@@ -308,22 +280,16 @@ observatory_archive_source("embedded_archive_observatory") {
 
   # TODO(zra): In a Fuchsia build, use a prebuilt Observatory archive.
   archive_target = ":observatory_archive"
-  deps = [
-    archive_target,
-  ]
+  deps = [ archive_target ]
   archive_dir = get_label_info(archive_target, "target_gen_dir")
   archive_name = get_label_info(archive_target, "name")
   archive_file = "${archive_dir}/${archive_name}.tar"
 }
 
 source_set("embedded_observatory_archive") {
-  deps = [
-    ":embedded_archive_observatory",
-  ]
+  deps = [ ":embedded_archive_observatory" ]
 
-  sources = [
-    rebase_path("$target_gen_dir/embedded_archive_observatory.cc"),
-  ]
+  sources = [ rebase_path("$target_gen_dir/embedded_archive_observatory.cc") ]
 }
 
 observatory_archive_source("standalone_archive_observatory") {
@@ -332,20 +298,14 @@ observatory_archive_source("standalone_archive_observatory") {
 
   # TODO(zra): In a Fuchsia build, use a prebuilt Observatory archive.
   archive_target = ":compressed_observatory_archive"
-  deps = [
-    archive_target,
-  ]
+  deps = [ archive_target ]
   archive_dir = get_label_info(archive_target, "target_gen_dir")
   archive_name = get_label_info(archive_target, "name")
   archive_file = "${archive_dir}/${archive_name}.tar"
 }
 
 source_set("standalone_observatory_archive") {
-  deps = [
-    ":standalone_archive_observatory",
-  ]
+  deps = [ ":standalone_archive_observatory" ]
 
-  sources = [
-    rebase_path("$target_gen_dir/standalone_archive_observatory.cc"),
-  ]
+  sources = [ rebase_path("$target_gen_dir/standalone_archive_observatory.cc") ]
 }
diff --git a/runtime/vm/compiler/compiler_sources.gni b/runtime/vm/compiler/compiler_sources.gni
index 9e8c3006d62..d2b651c292a 100644
--- a/runtime/vm/compiler/compiler_sources.gni
+++ b/runtime/vm/compiler/compiler_sources.gni
@@ -100,14 +100,14 @@ compiler_sources = [
   "compiler_state.h",
   "ffi/abi.cc",
   "ffi/abi.h",
-  "ffi/frame_rebase.cc",
-  "ffi/frame_rebase.h",
-  "ffi/marshaller.cc",
-  "ffi/marshaller.h",
   "ffi/call.cc",
   "ffi/call.h",
   "ffi/callback.cc",
   "ffi/callback.h",
+  "ffi/frame_rebase.cc",
+  "ffi/frame_rebase.h",
+  "ffi/marshaller.cc",
+  "ffi/marshaller.h",
   "ffi/native_calling_convention.cc",
   "ffi/native_calling_convention.h",
   "ffi/native_location.cc",
diff --git a/runtime/vm/vm_sources.gni b/runtime/vm/vm_sources.gni
index aede9a66a22..8f6e1f0910b 100644
--- a/runtime/vm/vm_sources.gni
+++ b/runtime/vm/vm_sources.gni
@@ -28,8 +28,8 @@ vm_sources = [
   "class_table.h",
   "clustered_snapshot.cc",
   "clustered_snapshot.h",
-  "code_comments.h",
   "code_comments.cc",
+  "code_comments.h",
   "code_descriptors.cc",
   "code_descriptors.h",
   "code_entry_kind.h",
@@ -103,9 +103,9 @@ vm_sources = [
   "exceptions.h",
   "ffi_callback_trampolines.cc",
   "ffi_callback_trampolines.h",
-  "finalizable_data.h",
   "field_table.cc",
   "field_table.h",
+  "finalizable_data.h",
   "fixed_cache.h",
   "flag_list.h",
   "flags.cc",
@@ -342,10 +342,10 @@ vm_sources = [
   "token_position.h",
   "type_table.h",
   "type_testing_stubs.cc",
+  "type_testing_stubs.h",
   "type_testing_stubs_arm.cc",
   "type_testing_stubs_arm64.cc",
   "type_testing_stubs_x64.cc",
-  "type_testing_stubs.h",
   "unibrow-inl.h",
   "unibrow.cc",
   "unibrow.h",
diff --git a/sdk/lib/ffi/ffi_sources.gni b/sdk/lib/ffi/ffi_sources.gni
index d2bb279d44c..5b34b9c2dc1 100644
--- a/sdk/lib/ffi/ffi_sources.gni
+++ b/sdk/lib/ffi/ffi_sources.gni
@@ -9,5 +9,5 @@ ffi_sdk_sources = [
   "annotations.dart",
   "dynamic_library.dart",
   "native_type.dart",
-  "struct.dart"
+  "struct.dart",
 ]
diff --git a/sdk/lib/internal/internal_sources.gni b/sdk/lib/internal/internal_sources.gni
index 4311341323a..8510ab2d881 100644
--- a/sdk/lib/internal/internal_sources.gni
+++ b/sdk/lib/internal/internal_sources.gni
@@ -11,8 +11,8 @@ internal_sdk_sources = [
   "cast.dart",
   "errors.dart",
   "iterable.dart",
-  "list.dart",
   "linked_list.dart",
+  "list.dart",
   "print.dart",
   "sort.dart",
   "symbol.dart",
diff --git a/sdk/lib/io/io_sources.gni b/sdk/lib/io/io_sources.gni
index 308dd947011..59b2ca957d0 100644
--- a/sdk/lib/io/io_sources.gni
+++ b/sdk/lib/io/io_sources.gni
@@ -17,8 +17,8 @@ io_sdk_sources = [
   "file_impl.dart",
   "file_system_entity.dart",
   "io_resource_info.dart",
-  "io_sink.dart",
   "io_service.dart",
+  "io_sink.dart",
   "link.dart",
   "namespace_impl.dart",
   "network_profiling.dart",
@@ -26,10 +26,10 @@ io_sdk_sources = [
   "platform.dart",
   "platform_impl.dart",
   "process.dart",
-  "service_object.dart",
   "secure_server_socket.dart",
   "secure_socket.dart",
   "security_context.dart",
+  "service_object.dart",
   "socket.dart",
   "stdio.dart",
   "string_transformer.dart",
diff --git a/sdk/lib/typed_data/typed_data_sources.gni b/sdk/lib/typed_data/typed_data_sources.gni
index 23ba0f0704b..00459f3fe56 100644
--- a/sdk/lib/typed_data/typed_data_sources.gni
+++ b/sdk/lib/typed_data/typed_data_sources.gni
@@ -4,6 +4,7 @@
 
 typed_data_sdk_sources = [
   "typed_data.dart",
+
   # The above file needs to be first if additional parts are added to the lib.
   "unmodifiable_typed_data.dart",
 ]
diff --git a/sdk/lib/vmservice/vmservice_sources.gni b/sdk/lib/vmservice/vmservice_sources.gni
index b8cf5bf1eda..742f6e86cd0 100644
--- a/sdk/lib/vmservice/vmservice_sources.gni
+++ b/sdk/lib/vmservice/vmservice_sources.gni
@@ -11,9 +11,9 @@ vmservice_sdk_sources = [
   "client.dart",
   "constants.dart",
   "devfs.dart",
-  "running_isolate.dart",
-  "running_isolates.dart",
   "message.dart",
   "message_router.dart",
   "named_lookup.dart",
+  "running_isolate.dart",
+  "running_isolates.dart",
 ]
diff --git a/sdk/lib/wasm/wasm_sources.gni b/sdk/lib/wasm/wasm_sources.gni
index dcd359a4d97..e63af2d21e5 100644
--- a/sdk/lib/wasm/wasm_sources.gni
+++ b/sdk/lib/wasm/wasm_sources.gni
@@ -2,6 +2,4 @@
 # for details. All rights reserved. Use of this source code is governed by a
 # BSD-style license that can be found in the LICENSE file.
 
-wasm_sdk_sources = [
-  "wasm.dart",
-]
+wasm_sdk_sources = [ "wasm.dart" ]
diff --git a/sdk_nnbd/lib/ffi/ffi_sources.gni b/sdk_nnbd/lib/ffi/ffi_sources.gni
index d2bb279d44c..5b34b9c2dc1 100644
--- a/sdk_nnbd/lib/ffi/ffi_sources.gni
+++ b/sdk_nnbd/lib/ffi/ffi_sources.gni
@@ -9,5 +9,5 @@ ffi_sdk_sources = [
   "annotations.dart",
   "dynamic_library.dart",
   "native_type.dart",
-  "struct.dart"
+  "struct.dart",
 ]
diff --git a/sdk_nnbd/lib/internal/internal_sources.gni b/sdk_nnbd/lib/internal/internal_sources.gni
index 4311341323a..8510ab2d881 100644
--- a/sdk_nnbd/lib/internal/internal_sources.gni
+++ b/sdk_nnbd/lib/internal/internal_sources.gni
@@ -11,8 +11,8 @@ internal_sdk_sources = [
   "cast.dart",
   "errors.dart",
   "iterable.dart",
-  "list.dart",
   "linked_list.dart",
+  "list.dart",
   "print.dart",
   "sort.dart",
   "symbol.dart",
diff --git a/sdk_nnbd/lib/io/io_sources.gni b/sdk_nnbd/lib/io/io_sources.gni
index 308dd947011..59b2ca957d0 100644
--- a/sdk_nnbd/lib/io/io_sources.gni
+++ b/sdk_nnbd/lib/io/io_sources.gni
@@ -17,8 +17,8 @@ io_sdk_sources = [
   "file_impl.dart",
   "file_system_entity.dart",
   "io_resource_info.dart",
-  "io_sink.dart",
   "io_service.dart",
+  "io_sink.dart",
   "link.dart",
   "namespace_impl.dart",
   "network_profiling.dart",
@@ -26,10 +26,10 @@ io_sdk_sources = [
   "platform.dart",
   "platform_impl.dart",
   "process.dart",
-  "service_object.dart",
   "secure_server_socket.dart",
   "secure_socket.dart",
   "security_context.dart",
+  "service_object.dart",
   "socket.dart",
   "stdio.dart",
   "string_transformer.dart",
diff --git a/sdk_nnbd/lib/typed_data/typed_data_sources.gni b/sdk_nnbd/lib/typed_data/typed_data_sources.gni
index 23ba0f0704b..00459f3fe56 100644
--- a/sdk_nnbd/lib/typed_data/typed_data_sources.gni
+++ b/sdk_nnbd/lib/typed_data/typed_data_sources.gni
@@ -4,6 +4,7 @@
 
 typed_data_sdk_sources = [
   "typed_data.dart",
+
   # The above file needs to be first if additional parts are added to the lib.
   "unmodifiable_typed_data.dart",
 ]
diff --git a/sdk_nnbd/lib/vmservice/vmservice_sources.gni b/sdk_nnbd/lib/vmservice/vmservice_sources.gni
index b8cf5bf1eda..742f6e86cd0 100644
--- a/sdk_nnbd/lib/vmservice/vmservice_sources.gni
+++ b/sdk_nnbd/lib/vmservice/vmservice_sources.gni
@@ -11,9 +11,9 @@ vmservice_sdk_sources = [
   "client.dart",
   "constants.dart",
   "devfs.dart",
-  "running_isolate.dart",
-  "running_isolates.dart",
   "message.dart",
   "message_router.dart",
   "named_lookup.dart",
+  "running_isolate.dart",
+  "running_isolates.dart",
 ]
diff --git a/sdk_nnbd/lib/wasm/wasm_sources.gni b/sdk_nnbd/lib/wasm/wasm_sources.gni
index dcd359a4d97..e63af2d21e5 100644
--- a/sdk_nnbd/lib/wasm/wasm_sources.gni
+++ b/sdk_nnbd/lib/wasm/wasm_sources.gni
@@ -2,6 +2,4 @@
 # for details. All rights reserved. Use of this source code is governed by a
 # BSD-style license that can be found in the LICENSE file.
 
-wasm_sdk_sources = [
-  "wasm.dart",
-]
+wasm_sdk_sources = [ "wasm.dart" ]
diff --git a/third_party/llvm/BUILD.gn b/third_party/llvm/BUILD.gn
index 74424237ffa..bb18f6044d0 100644
--- a/third_party/llvm/BUILD.gn
+++ b/third_party/llvm/BUILD.gn
@@ -23,27 +23,19 @@ llvm_library("LLVMDemangle") {
 }
 
 llvm_library("LLVMSupport") {
-  deps = [
-    ":LLVMDemangle",
-  ]
+  deps = [ ":LLVMDemangle" ]
 }
 
 llvm_library("LLVMAArch64Utils") {
-  deps = [
-    ":LLVMSupport",
-  ]
+  deps = [ ":LLVMSupport" ]
 }
 
 llvm_library("LLVMBinaryFormat") {
-  deps = [
-    ":LLVMSupport",
-  ]
+  deps = [ ":LLVMSupport" ]
 }
 
 llvm_library("LLVMDebugInfoMSF") {
-  deps = [
-    ":LLVMSupport",
-  ]
+  deps = [ ":LLVMSupport" ]
 }
 
 llvm_library("LLVMDebugInfoCodeView") {
@@ -70,9 +62,7 @@ llvm_library("LLVMAArch64AsmPrinter") {
 }
 
 llvm_library("LLVMAArch64Info") {
-  deps = [
-    ":LLVMSupport",
-  ]
+  deps = [ ":LLVMSupport" ]
 }
 
 llvm_library("LLVMAArch64Desc") {
@@ -308,9 +298,7 @@ llvm_library("LLVMAMDGPUAsmPrinter") {
 }
 
 llvm_library("LLVMAMDGPUInfo") {
-  deps = [
-    ":LLVMSupport",
-  ]
+  deps = [ ":LLVMSupport" ]
 }
 
 llvm_library("LLVMAMDGPUDesc") {
@@ -441,9 +429,7 @@ llvm_library("LLVMARCAsmPrinter") {
 }
 
 llvm_library("LLVMARCInfo") {
-  deps = [
-    ":LLVMSupport",
-  ]
+  deps = [ ":LLVMSupport" ]
 }
 
 llvm_library("LLVMARCDesc") {
@@ -481,9 +467,7 @@ llvm_library("LLVMARCDisassembler") {
 }
 
 llvm_library("LLVMARMUtils") {
-  deps = [
-    ":LLVMSupport",
-  ]
+  deps = [ ":LLVMSupport" ]
 }
 
 llvm_library("LLVMARMAsmPrinter") {
@@ -495,9 +479,7 @@ llvm_library("LLVMARMAsmPrinter") {
 }
 
 llvm_library("LLVMARMInfo") {
-  deps = [
-    ":LLVMSupport",
-  ]
+  deps = [ ":LLVMSupport" ]
 }
 
 llvm_library("LLVMARMDesc") {
@@ -615,9 +597,7 @@ llvm_library("LLVMBPFAsmPrinter") {
 }
 
 llvm_library("LLVMBPFInfo") {
-  deps = [
-    ":LLVMSupport",
-  ]
+  deps = [ ":LLVMSupport" ]
 }
 
 llvm_library("LLVMBPFDesc") {
@@ -701,9 +681,7 @@ llvm_library("LLVMDebugInfoPDB") {
 }
 
 llvm_library("LLVMOption") {
-  deps = [
-    ":LLVMSupport",
-  ]
+  deps = [ ":LLVMSupport" ]
 }
 
 llvm_library("LLVMDlltoolDriver") {
@@ -757,9 +735,7 @@ llvm_library("LLVMFuzzMutate") {
 }
 
 llvm_library("LLVMHexagonInfo") {
-  deps = [
-    ":LLVMSupport",
-  ]
+  deps = [ ":LLVMSupport" ]
 }
 
 llvm_library("LLVMHexagonDesc") {
@@ -867,9 +843,7 @@ llvm_library("LLVMLTO") {
 }
 
 llvm_library("LLVMLanaiInfo") {
-  deps = [
-    ":LLVMSupport",
-  ]
+  deps = [ ":LLVMSupport" ]
 }
 
 llvm_library("LLVMLanaiAsmPrinter") {
@@ -937,9 +911,7 @@ llvm_library("LLVMLibDriver") {
 }
 
 llvm_library("LLVMLineEditor") {
-  deps = [
-    ":LLVMSupport",
-  ]
+  deps = [ ":LLVMSupport" ]
 }
 
 llvm_library("LLVMMIRParser") {
@@ -962,9 +934,7 @@ llvm_library("LLVMMSP430AsmPrinter") {
 }
 
 llvm_library("LLVMMSP430Info") {
-  deps = [
-    ":LLVMSupport",
-  ]
+  deps = [ ":LLVMSupport" ]
 }
 
 llvm_library("LLVMMSP430Desc") {
@@ -999,9 +969,7 @@ llvm_library("LLVMMipsAsmPrinter") {
 }
 
 llvm_library("LLVMMipsInfo") {
-  deps = [
-    ":LLVMSupport",
-  ]
+  deps = [ ":LLVMSupport" ]
 }
 
 llvm_library("LLVMMipsDesc") {
@@ -1056,9 +1024,7 @@ llvm_library("LLVMNVPTXAsmPrinter") {
 }
 
 llvm_library("LLVMNVPTXInfo") {
-  deps = [
-    ":LLVMSupport",
-  ]
+  deps = [ ":LLVMSupport" ]
 }
 
 llvm_library("LLVMNVPTXDesc") {
@@ -1106,9 +1072,7 @@ llvm_library("LLVMX86AsmPrinter") {
 }
 
 llvm_library("LLVMX86Info") {
-  deps = [
-    ":LLVMSupport",
-  ]
+  deps = [ ":LLVMSupport" ]
 }
 
 llvm_library("LLVMX86Desc") {
@@ -1148,9 +1112,7 @@ llvm_library("LLVMNios2AsmPrinter") {
 }
 
 llvm_library("LLVMNios2Info") {
-  deps = [
-    ":LLVMSupport",
-  ]
+  deps = [ ":LLVMSupport" ]
 }
 
 llvm_library("LLVMNios2Desc") {
@@ -1205,9 +1167,7 @@ llvm_library("LLVMPowerPCAsmPrinter") {
 }
 
 llvm_library("LLVMPowerPCInfo") {
-  deps = [
-    ":LLVMSupport",
-  ]
+  deps = [ ":LLVMSupport" ]
 }
 
 llvm_library("LLVMPowerPCDesc") {
@@ -1263,9 +1223,7 @@ llvm_library("LLVMRISCVAsmPrinter") {
 }
 
 llvm_library("LLVMRISCVInfo") {
-  deps = [
-    ":LLVMSupport",
-  ]
+  deps = [ ":LLVMSupport" ]
 }
 
 llvm_library("LLVMRISCVDesc") {
@@ -1318,9 +1276,7 @@ llvm_library("LLVMSparcAsmPrinter") {
 }
 
 llvm_library("LLVMSparcInfo") {
-  deps = [
-    ":LLVMSupport",
-  ]
+  deps = [ ":LLVMSupport" ]
 }
 
 llvm_library("LLVMSparcDesc") {
@@ -1383,9 +1339,7 @@ llvm_library("LLVMSystemZAsmPrinter") {
 }
 
 llvm_library("LLVMSystemZInfo") {
-  deps = [
-    ":LLVMSupport",
-  ]
+  deps = [ ":LLVMSupport" ]
 }
 
 llvm_library("LLVMSystemZDesc") {
@@ -1435,21 +1389,15 @@ llvm_library("LLVMSystemZDisassembler") {
 }
 
 llvm_library("LLVMTableGen") {
-  deps = [
-    ":LLVMSupport",
-  ]
+  deps = [ ":LLVMSupport" ]
 }
 
 llvm_library("LLVMTestingSupport") {
-  deps = [
-    ":LLVMSupport",
-  ]
+  deps = [ ":LLVMSupport" ]
 }
 
 llvm_library("LLVMWebAssemblyInfo") {
-  deps = [
-    ":LLVMSupport",
-  ]
+  deps = [ ":LLVMSupport" ]
 }
 
 llvm_library("LLVMWebAssemblyAsmParser") {
@@ -1504,9 +1452,7 @@ llvm_library("LLVMWebAssemblyDisassembler") {
 }
 
 llvm_library("LLVMWindowsManifest") {
-  deps = [
-    ":LLVMSupport",
-  ]
+  deps = [ ":LLVMSupport" ]
 }
 
 llvm_library("LLVMX86AsmParser") {
@@ -1536,9 +1482,7 @@ llvm_library("LLVMXCoreAsmPrinter") {
 }
 
 llvm_library("LLVMXCoreInfo") {
-  deps = [
-    ":LLVMSupport",
-  ]
+  deps = [ ":LLVMSupport" ]
 }
 
 llvm_library("LLVMXCoreDesc") {
diff --git a/utils/application_snapshot.gni b/utils/application_snapshot.gni
index 92c1921f931..10743175143 100644
--- a/utils/application_snapshot.gni
+++ b/utils/application_snapshot.gni
@@ -93,9 +93,7 @@ template("_application_snapshot") {
                dot_packages,
              ]
     output = "$target_gen_dir/$name.dart.dill"
-    outputs = [
-      output,
-    ]
+    outputs = [ output ]
 
     depfile = "$output.d"
     abs_depfile = rebase_path(depfile)
@@ -133,9 +131,7 @@ template("_application_snapshot") {
 
     inputs = extra_inputs
 
-    outputs = [
-      output,
-    ]
+    outputs = [ output ]
 
     abs_depfile = rebase_path(depfile)
     abs_output = rebase_path(output, root_build_dir)
diff --git a/utils/bazel/BUILD.gn b/utils/bazel/BUILD.gn
index d674776e3e3..774f3011ba0 100644
--- a/utils/bazel/BUILD.gn
+++ b/utils/bazel/BUILD.gn
@@ -7,7 +7,5 @@ import("../application_snapshot.gni")
 application_snapshot("kernel_worker") {
   main_dart = "kernel_worker.dart"
   training_args = [ "--help" ]
-  deps = [
-    "../../pkg:pkg_files_stamp",
-  ]
+  deps = [ "../../pkg:pkg_files_stamp" ]
 }
diff --git a/utils/compile_platform.gni b/utils/compile_platform.gni
index 1d30b6fda34..a2e94b3cd61 100644
--- a/utils/compile_platform.gni
+++ b/utils/compile_platform.gni
@@ -76,8 +76,7 @@ template("compile_platform") {
       args +=
           [ rebase_path(invoker.libraries_specification_uri, root_build_dir) ]
     }
-    args +=
-        [ rebase_path("$root_out_dir/$outline", root_build_dir) ]
+    args += [ rebase_path("$root_out_dir/$outline", root_build_dir) ]
     args += rebase_path(outputs, root_build_dir)
   }
 }
diff --git a/utils/compiler/BUILD.gn b/utils/compiler/BUILD.gn
index 9313f359498..8ad05eef16e 100644
--- a/utils/compiler/BUILD.gn
+++ b/utils/compiler/BUILD.gn
@@ -39,9 +39,7 @@ prebuilt_dart_action("dart2js_create_snapshot_entry") {
     "../../tools/VERSION",
   ]
 
-  outputs = [
-    "$target_gen_dir/dart2js.dart",
-  ]
+  outputs = [ "$target_gen_dir/dart2js.dart" ]
 
   packages = "../../.packages"
 
diff --git a/utils/create_timestamp.gni b/utils/create_timestamp.gni
index 75ae4cda7a5..835700a6a7c 100644
--- a/utils/create_timestamp.gni
+++ b/utils/create_timestamp.gni
@@ -18,9 +18,7 @@ template("create_timestamp_file") {
                         [ "absolute" ] + list_args,
                         "list lines")
     inputs = [ "$_dart_root/tools/list_dart_files.py" ] + files
-    outputs = [
-      output,
-    ]
+    outputs = [ output ]
     script = "$_dart_root/tools/create_timestamp_file.py"
     args = [ rebase_path(output) ]
   }
diff --git a/utils/dart2native/BUILD.gn b/utils/dart2native/BUILD.gn
index 47712d13ac3..4557da6b97b 100644
--- a/utils/dart2native/BUILD.gn
+++ b/utils/dart2native/BUILD.gn
@@ -5,15 +5,11 @@
 import("../application_snapshot.gni")
 
 group("dart2native") {
-  deps = [
-    ":generate_dart2native_snapshot",
-  ]
+  deps = [ ":generate_dart2native_snapshot" ]
 }
 
 application_snapshot("generate_dart2native_snapshot") {
   main_dart = "../../pkg/dart2native/bin/dart2native.dart"
-  training_args = [
-    "--help",
-  ]
+  training_args = [ "--help" ]
   name = "dart2native"
 }
diff --git a/utils/dartanalyzer/BUILD.gn b/utils/dartanalyzer/BUILD.gn
index 35b88d75497..6065802b873 100644
--- a/utils/dartanalyzer/BUILD.gn
+++ b/utils/dartanalyzer/BUILD.gn
@@ -43,9 +43,7 @@ prebuilt_dart_action("generate_summary_strong") {
   packages = "../../.packages"
   inputs = sdk_lib_files + analyzer_files
   output = "$root_gen_dir/strong.sum"
-  outputs = [
-    output,
-  ]
+  outputs = [ output ]
   if (use_nnbd) {
     args = [
       "build-non-nullable",
diff --git a/utils/dartdevc/BUILD.gn b/utils/dartdevc/BUILD.gn
index ec139407a24..e8884dde57f 100644
--- a/utils/dartdevc/BUILD.gn
+++ b/utils/dartdevc/BUILD.gn
@@ -54,9 +54,7 @@ application_snapshot("dartdevc") {
     ":dartdevc_platform",
   ]
 
-  inputs = [
-    sdk_outline_dill,
-  ]
+  inputs = [ sdk_outline_dill ]
 }
 
 # TODO(#38701) Cleanup after merging the forked SDK into mainline.
@@ -98,17 +96,13 @@ template("dart2js_compile") {
   abs_output = rebase_path(out)
 
   prebuilt_dart_action(target_name) {
-    deps = [
-      "../compiler:compile_dart2js_platform",
-    ]
+    deps = [ "../compiler:compile_dart2js_platform" ]
 
     inputs = sdk_lib_files + compiler_files + dev_compiler_files + [
                "$root_out_dir/dart2js_platform.dill",
                "$root_out_dir/dart2js_outline.dill",
              ]
-    outputs = [
-      out,
-    ]
+    outputs = [ out ]
 
     script = "../../pkg/compiler/lib/src/dart2js.dart"
 
@@ -148,9 +142,7 @@ prebuilt_dart_action("dartdevc_patch_sdk") {
   # Arbitrarily use the version file as a token file to check against to see if
   # the sources have changed.
   # TODO(rnystrom): List the outputs more precisely?
-  outputs = [
-    "$patched_sdk_dir/version",
-  ]
+  outputs = [ "$patched_sdk_dir/version" ]
 
   args = [
     "--libraries",
@@ -370,7 +362,10 @@ compile_platform("dartdevc_platform") {
 
   # TODO(38701): Cleanup after merging the forked SDK into mainline.
   if (use_nnbd) {
-    args += [ "--enable-experiment=non-nullable", "--force-nnbd-checks" ]
+    args += [
+      "--enable-experiment=non-nullable",
+      "--force-nnbd-checks",
+    ]
   }
 }
 
diff --git a/utils/gen_kernel/BUILD.gn b/utils/gen_kernel/BUILD.gn
index d69281f1a4d..a1417bb7063 100644
--- a/utils/gen_kernel/BUILD.gn
+++ b/utils/gen_kernel/BUILD.gn
@@ -6,17 +6,17 @@ import("../application_snapshot.gni")
 
 application_snapshot("gen_kernel") {
   main_dart = "../../pkg/vm/bin/gen_kernel.dart"
-  deps = [
-    "../../runtime/vm:vm_platform",
-  ]
+  deps = [ "../../runtime/vm:vm_platform" ]
+
   # NOTE: The output filename must be kept in sync with the output of the
   # vm_platform rule.
-  vm_platform_out = get_label_info("../../runtime/vm:vm_platform", "root_out_dir")
+  vm_platform_out =
+      get_label_info("../../runtime/vm:vm_platform", "root_out_dir")
   vm_platform = "$vm_platform_out/vm_platform_strong.dill"
   training_args = [
-      "--platform",
-      rebase_path(vm_platform),
-      rebase_path("../../pkg/vm/bin/gen_kernel.dart"),
-      "-o -",
+    "--platform",
+    rebase_path(vm_platform),
+    rebase_path("../../pkg/vm/bin/gen_kernel.dart"),
+    "-o -",
   ]
 }
diff --git a/utils/kernel-service/BUILD.gn b/utils/kernel-service/BUILD.gn
index fd637490ba6..062c3ff108b 100644
--- a/utils/kernel-service/BUILD.gn
+++ b/utils/kernel-service/BUILD.gn
@@ -10,13 +10,9 @@ import("../create_timestamp.gni")
 
 group("kernel-service") {
   if (create_kernel_service_snapshot) {
-    deps = [
-      ":copy_kernel-service_snapshot",
-    ]
+    deps = [ ":copy_kernel-service_snapshot" ]
   } else {
-    deps = [
-      ":kernel_service_dill",
-    ]
+    deps = [ ":kernel_service_dill" ]
   }
 }
 
@@ -37,15 +33,9 @@ kernel_application_snapshot("kernel-service_snapshot") {
 }
 
 copy("copy_kernel-service_snapshot") {
-  deps = [
-    ":kernel-service_snapshot",
-  ]
-  sources = [
-    "$root_gen_dir/kernel-service.dart.snapshot",
-  ]
-  outputs = [
-    "$root_out_dir/kernel-service.dart.snapshot",
-  ]
+  deps = [ ":kernel-service_snapshot" ]
+  sources = [ "$root_gen_dir/kernel-service.dart.snapshot" ]
+  outputs = [ "$root_out_dir/kernel-service.dart.snapshot" ]
 }
 
 create_timestamp_file("frontend_server_files_stamp") {
@@ -90,9 +80,7 @@ template("kernel_service_dill") {
       "$root_out_dir/vm_platform_strong.dill",
     ]
     output = "$root_gen_dir/kernel_service" + invoker.target_name + ".dill"
-    outputs = [
-      output,
-    ]
+    outputs = [ output ]
 
     depfile = "$root_gen_dir/kernel_service" + invoker.target_name + "_dill.d"
     abs_depfile = rebase_path(depfile)