diff --git a/DEPS b/DEPS
index f05a29f287d..0be6cc58158 100644
--- a/DEPS
+++ b/DEPS
@@ -58,8 +58,8 @@ vars = {
   "barback_tag" : "@0.15.2+14",
   "bazel_worker_tag": "@v0.1.9",
   "boolean_selector_tag" : "@1.0.3",
-  "boringssl_gen_rev": "@39762c7f9ee4d828ff212838fae79528b94d5443",
-  "boringssl_rev" : "@a62dbf88d8a3c04446db833a1eb80a620cb1514d",
+  "boringssl_gen_rev": "@344f455fd13d46f054726638e76026156ea73aa9",
+  "boringssl_rev" : "@672f6fc2486745d0cabc3aaeb4e0a3cd13b37b12",
   "charcode_tag": "@v1.1.1",
   "chrome_rev" : "@19997",
   "cli_util_tag" : "@0.1.2+1",
diff --git a/build/config/BUILDCONFIG.gn b/build/config/BUILDCONFIG.gn
index ff7b42f7665..e9129e3990d 100644
--- a/build/config/BUILDCONFIG.gn
+++ b/build/config/BUILDCONFIG.gn
@@ -217,6 +217,7 @@ _native_compiler_configs = [
   "//build/config/compiler:compiler",
   "//build/config/compiler:clang_stackrealign",
   "//build/config/compiler:compiler_arm_fpu",
+  "//build/config/compiler:compiler_arm_thumb",
   "//build/config/compiler:chromium_code",
   "//build/config/compiler:default_include_dirs",
   "//build/config/compiler:no_rtti",
diff --git a/build/config/compiler/BUILD.gn b/build/config/compiler/BUILD.gn
index d1c2c409922..7418019aeaf 100644
--- a/build/config/compiler/BUILD.gn
+++ b/build/config/compiler/BUILD.gn
@@ -197,12 +197,6 @@ config("compiler") {
       if (arm_tune != "") {
         cflags += [ "-mtune=$arm_tune" ]
       }
-      if (arm_use_thumb) {
-        cflags += [ "-mthumb" ]
-        if (is_android && !is_clang) {  # Clang doesn't support this option.
-          cflags += [ "-mthumb-interwork" ]
-        }
-      }
       if (!is_clang) {
         # Clang doesn't support these flags.
         cflags += [
@@ -380,6 +374,18 @@ config("compiler_arm_fpu") {
   }
 }
 
+config("compiler_arm_thumb") {
+  if (current_cpu == "arm") {
+    if (arm_use_thumb) {
+      cflags = [ "-mthumb" ]
+      if (is_android && !is_clang) {  # Clang doesn't support this option.
+        cflags += [ "-mthumb-interwork" ]
+      }
+      asmflags = cflags
+    }
+  }
+}
+
 # runtime_library -------------------------------------------------------------
 #
 # Sets the runtime library and associated options.
diff --git a/third_party/tcmalloc/BUILD.gn b/third_party/tcmalloc/BUILD.gn
index 5ffcb89b879..bea04279e76 100644
--- a/third_party/tcmalloc/BUILD.gn
+++ b/third_party/tcmalloc/BUILD.gn
@@ -72,6 +72,7 @@ source_set("tcmalloc") {
   configs -= [
     "//build/config/compiler:chromium_code",
     "//build/config/compiler:clang_stackrealign",
+    "//build/config/compiler:compiler_arm_thumb",
   ]
   configs += [ ":internal_config" ]
 
diff --git a/tools/gn.py b/tools/gn.py
index 7d376205057..c4aa33a380d 100755
--- a/tools/gn.py
+++ b/tools/gn.py
@@ -152,17 +152,7 @@ def UseSanitizer(args):
 
 def DontUseClang(args, target_os, host_cpu, target_cpu):
   # We don't have clang on Windows.
-  return (target_os == 'win'
-         # TODO(infra): Clang cannot compile boringssl and tcmalloc in -mthumb
-         # mode.
-         # See dartbug.com/32363.
-         #
-         # We also can't compile the whole VM with clang in -marm mode
-         # See: dartbug.com/32362.
-         or (target_os == 'linux'
-             and target_cpu.startswith('arm')
-             and target_cpu != 'arm64'
-             and not UseSanitizer(args)))
+  return target_os == 'win'
 
 
 def UseWheezySysroot(args, gn_args):