content: Do not call empty methods of WebScriptController.

content/renderer/render_thread_impl.cc

 // Copyright (c) 2012 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 "content/renderer/render_thread_impl.h"
 
 #include <algorithm>
 #include <limits>
 #include <map>
 #include <vector>
@@ skipping 686 matching lines @@
   scoped_refptr<base::MessageLoopProxy> output_surface_loop;
   if (enable)
     output_surface_loop = compositor_message_loop_proxy_;
   else
     output_surface_loop = base::MessageLoopProxy::current();
 
   compositor_output_surface_filter_ =
       CompositorOutputSurface::CreateFilter(output_surface_loop.get());
   AddFilter(compositor_output_surface_filter_.get());
 
-  WebScriptController::enableV8SingleThreadMode();
-
   RenderThreadImpl::RegisterSchemes();
 
   EnableBlinkPlatformLogChannels(
       command_line.GetSwitchValueASCII(switches::kBlinkPlatformLogChannels));
 
   SetRuntimeFeaturesDefaultsAndUpdateFromArgs(command_line);
 
   if (!media::IsMediaLibraryInitialized()) {
     WebRuntimeFeatures::enableMediaPlayer(false);
     WebRuntimeFeatures::enableWebAudio(false);
@@ skipping 701 matching lines @@
   hidden_widget_count_--;
 
   if (!GetContentClient()->renderer()->RunIdleHandlerWhenWidgetsHidden()) {
     return;
   }
 
   ScheduleIdleHandler(kLongIdleHandlerDelayMs);
 }
 
 }  // namespace content