Use v8::MicrotasksScope internally in V8RecursionScope.

extensions/renderer/safe_builtins.cc

 // 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.
 
 #include "extensions/renderer/safe_builtins.h"
 
 #include "base/logging.h"
 #include "base/stl_util.h"
 #include "base/strings/stringprintf.h"
 #include "extensions/renderer/script_context.h"
 #include "extensions/renderer/v8_helpers.h"
+#include "third_party/WebKit/public/web/WebScopedMicrotaskSuppression.h"
 
 namespace extensions {
 
 using namespace v8_helpers;
 
 namespace {
 
 const char kClassName[] = "extensions::SafeBuiltins";
 
 // Documentation for makeCallback in the JavaScript, out here to reduce the
@@ skipping 171 matching lines @@
     v8::Local<v8::Context> context = info.GetIsolate()->GetCurrentContext();
     int argc = args_length - first_arg_index;
     scoped_ptr<v8::Local<v8::Value> []> argv(new v8::Local<v8::Value>[argc]);
     for (int i = 0; i < argc; ++i) {
       CHECK(IsTrue(args->Has(context, i + first_arg_index)));
       // Getting a property value could throw an exception.
       if (!GetProperty(context, args, i + first_arg_index, &argv[i]))
         return;
     }
 
+    blink::WebScopedMicrotaskSuppression microtasks_scope;
     v8::Local<v8::Value> return_value;
     if (function->Call(context, recv, argc, argv.get()).ToLocal(&return_value))
       info.GetReturnValue().Set(return_value);
   }
 
   static void Save(const v8::FunctionCallbackInfo<v8::Value>& info) {
     CHECK(info.Length() == 2 && info[0]->IsString() && info[1]->IsObject());
     SaveImpl(*v8::String::Utf8Value(info[0]),
              info[1],
              info.GetIsolate()->GetCurrentContext());
@@ skipping 31 matching lines @@
 
 v8::Local<v8::Object> SafeBuiltins::GetString() const {
   return Load("String", context_->v8_context());
 }
 
 v8::Local<v8::Object> SafeBuiltins::GetError() const {
   return Load("Error", context_->v8_context());
 }
 
 }  //  namespace extensions