Use v8::Local inplace of v8::Handle in src/chrome/*

chrome/renderer/plugins/chrome_plugin_placeholder.cc

 // Copyright 2013 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 "chrome/renderer/plugins/chrome_plugin_placeholder.h"
 
 #include "base/strings/string_number_conversions.h"
 #include "base/strings/utf_string_conversions.h"
 #include "base/values.h"
 #include "chrome/common/prerender_messages.h"
@@ skipping 353 matching lines @@
   params.y = event.windowY;
 
   context_menu_request_id_ = render_frame()->ShowContextMenu(this, params);
   g_last_active_menu = this;
 #endif  // OS_ANDROID
 }
 
 void ChromePluginPlaceholder::BindWebFrame(blink::WebFrame* frame) {
   v8::Isolate* isolate = blink::mainThreadIsolate();
   v8::HandleScope handle_scope(isolate);
-  v8::Handle<v8::Context> context = frame->mainWorldScriptContext();
+  v8::Local<v8::Context> context = frame->mainWorldScriptContext();
   DCHECK(!context.IsEmpty());
 
   v8::Context::Scope context_scope(context);
-  v8::Handle<v8::Object> global = context->Global();
+  v8::Local<v8::Object> global = context->Global();
   global->Set(gin::StringToV8(isolate, "plugin"),
               gin::CreateHandle(isolate, this).ToV8());
 }
 
 gin::ObjectTemplateBuilder ChromePluginPlaceholder::GetObjectTemplateBuilder(
     v8::Isolate* isolate) {
   return LoadablePluginPlaceholder::GetObjectTemplateBuilder(isolate).SetMethod(
       "openAboutPlugins", &ChromePluginPlaceholder::OpenAboutPluginsCallback);
 }