[infra] Update d8 to 7.5.149

Change-Id: I1f1f86ec56d34c32d574f4862578d8a7888b6ac9
Reviewed-on: https://dart-review.googlesource.com/c/sdk/+/96903
Reviewed-by: Stephen Adams <sra@google.com>
Commit-Queue: Stephen Adams <sra@google.com>
Auto-Submit: Alexander Thomas <athom@google.com>

DEPS

@@ -163,7 +163,7 @@ deps = {
   Var("dart_root") + "/third_party/d8": {
       "packages": [{
           "package": "dart/d8",
-          "version": "version:6.9.427.23+1",
+          "version": "version:7.5.149",
       }],
       "dep_type": "cipd",
   },

third_party/d8/README.google

@@ -1,9 +1,9 @@
 Name: V8 command line javascript shell.
 Short Name: d8
-URL: https://chromium.googlesource.com/v8/v8/+/refs/tags/6.9.427.23
-Version: 6.9.427.23
-Revision: 40b7c570a56b1134ff5083d8311e69ad8bf8fbd7
-Date: September 14 2018
+URL: https://chromium.googlesource.com/v8/v8/+/refs/tags/7.5.149
+Version: 7.5.149
+Revision: 804cfc5fb2ab8c49facc7a5f486c1555c2cbad63
+Date: March 31 2019
 License: BSD
 
 Description:

third_party/d8/update.sh

@@ -26,7 +26,7 @@ path=("linux" "linux/ia32" "linux/x64" "linux/arm32" "macos" "windows")
 for i in "${!arch[@]}"
 do
   filename="v8-${arch[$i]}-rel-$version.zip"
-  gsutil cp "gs://chromium-v8/official/$major.$minor/$filename" .
+  gsutil cp "gs://chromium-v8/official/canary/$filename" .
   mkdir -p d8/${path[$i]}
   unzip -q $filename -d d8/${path[$i]}
   rm $filename