Implement Blink-in-JS for DOM methods

Source/core/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/ui.gni")
 import("//third_party/WebKit/Source/bindings/bindings.gni")
 import("//third_party/WebKit/Source/bindings/core/v8/generated.gni")
 import("//third_party/WebKit/Source/bindings/modules/modules.gni")
 import("//third_party/WebKit/Source/bindings/modules/v8/generated.gni")
 import("//third_party/WebKit/Source/bindings/scripts/scripts.gni")
@@ skipping 925 matching lines @@
 
 # One-off scripts --------------------------------------------------------------
 
 # "generatePrivateScript" in make_core_generated from GYP.
 action("make_core_generated_private_script") {
   visibility = ":make_core_generated"
   script = "../build/scripts/make_private_script_source.py"
 
   source_prereqs = [
     "../bindings/v8/PrivateScriptRunner.js",
+    "testing/Internals.js",
   ]
   outputs = [
     "$blink_core_output_dir/PrivateScriptSources.h",
   ]
 
   args = rebase_path(outputs, root_build_dir)
   args += rebase_path(source_prereqs, root_build_dir)
 
   deps = make_core_generated_deps
 }
@@ skipping 159 matching lines @@
     "$blink_core_output_dir/{{source_name_part}}.h",
   ]
   args = [
     "{{source}}",
     rel_blink_core_gen_dir,
     bison_exe,
   ]
 
   deps = make_core_generated_deps
 }