[Bindings] Create and use V8 context snapshots

chrome/BUILD.gn

 # Copyright 2014 The Chromium Authors. All rights reserved.
 # Use of this source code is governed by a BSD-style license that can be
 # found in the LICENSE file.
 
 import("//build/config/chrome_build.gni")
 import("//build/config/compiler/compiler.gni")
 import("//build/config/compiler/pgo/pgo.gni")
 import("//build/config/features.gni")
 import("//build/config/locales.gni")
 import("//build/config/sanitizers/sanitizers.gni")
@@ skipping 96 matching lines @@
   # This should not pull in installer strings. This is will bloat the binary
   # for no reason and is easy to mess up. See the comment at the top of
   # //chrome/installer/util/BUILD.gn.
   assert_no_deps = [ "//chrome/installer/util:strings" ]
 }
 
 if (!is_android && !is_mac) {
   group("chrome") {
     public_deps = [
       ":chrome_initial",
+      "//gin:v8_context_snapshot_for_blink",
     ]
     data_deps = [
       ":chrome_initial",
     ]
+    data = [
+      "$root_out_dir/context_blob.bin",

[Yuki, 2017/05/30 14:35:55]

super nit: s/context_blob/v8_context_blob/

I think that a term "context" is highly context-dependent.  Would like to avoid
any possible ambiguity.

[peria, 2017/06/01 08:33:32]

Renamed it blink_snapshot_blob.bin.

+    ]
     if (is_win) {
       public_deps += [ ":reorder_imports" ]
     }
     if (use_aura && (is_win || is_linux)) {
       data_deps += [ "//chrome/app:service_manifests" ]
     }
   }
 
   executable("chrome_initial") {
     if (is_win) {
@@ skipping 654 matching lines @@
     if (using_sanitizer) {
       # crashpad_handler requires the ASan runtime at its @executable_path.
       sources += [ "$root_out_dir/libclang_rt.asan_osx_dynamic.dylib" ]
       public_deps += [ "//build/config/sanitizers:copy_asan_runtime" ]
     }
   }
 
   bundle_data("chrome_framework_resources") {
     sources = [
       "$root_out_dir/app_mode_loader.app",
+      "$root_out_dir/context_blob.bin",
 
       # This image is used to badge the lock icon in the
       # authentication dialogs, such as those used for installation
       # from disk image and Keystone promotion (if so enabled).  It
       # needs to exist as a file on disk and not just something in a
       # resource bundle because that's the interface that
       # Authorization Services uses.  Also, Authorization Services
       # can't deal with .icns files.
       "app/theme/default_100_percent/$branding_path_component/product_logo_32.png",
       "browser/mac/install.sh",
     ]
 
     outputs = [
       "{{bundle_resources_dir}}/{{source_file_part}}",
     ]
 
     public_deps = [
       ":packed_resources",
       "//chrome/app_shim:app_mode_loader",
+      "//gin:v8_context_snapshot_for_blink",
     ]
 
     if (is_chrome_branded) {
       sources += [
         "browser/mac/keystone_promote_postflight.sh",
         "browser/mac/keystone_promote_preflight.sh",
       ]
     }
 
     if (icu_use_data_file) {
@@ skipping 944 matching lines @@
       "//chrome/app/theme/$branding_path_component/product_logo_48.png",
       "//chrome/tools/build/linux/chrome-wrapper",
       "//third_party/xdg-utils/scripts/xdg-mime",
       "//third_party/xdg-utils/scripts/xdg-settings",
     ]
     outputs = [
       "$root_out_dir/{{source_file_part}}",
     ]
   }
 }