Implement WebKit::Platform::isThreadedCompositingEnabled()

content/renderer/renderer_webkitplatformsupport_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/renderer_webkitplatformsupport_impl.h"
 
 #include "base/command_line.h"
 #include "base/file_util.h"
 #include "base/files/file_path.h"
 #include "base/lazy_instance.h"
@@ skipping 600 matching lines @@
   if (!host)
     return false;
 
   const GPUInfo& gpu_info = host->gpu_info();
   if (gpu_info.can_lose_context || gpu_info.software_rendering)
     return false;
 
   return true;
 }
 
+bool RendererWebKitPlatformSupportImpl::isThreadedCompositingEnabled() {
+  return !!RenderThreadImpl::current()->compositor_thread();
+}
+
 double RendererWebKitPlatformSupportImpl::audioHardwareSampleRate() {
   RenderThreadImpl* thread = RenderThreadImpl::current();
   return thread->GetAudioHardwareConfig()->GetOutputSampleRate();
 }
 
 size_t RendererWebKitPlatformSupportImpl::audioHardwareBufferSize() {
   RenderThreadImpl* thread = RenderThreadImpl::current();
   return thread->GetAudioHardwareConfig()->GetOutputBufferSize();
 }
 
@@ skipping 228 matching lines @@
 //------------------------------------------------------------------------------
 
 bool RendererWebKitPlatformSupportImpl::processMemorySizesInBytes(
     size_t* private_bytes, size_t* shared_bytes) {
   content::RenderThread::Get()->Send(
       new ViewHostMsg_GetProcessMemorySizes(private_bytes, shared_bytes));
   return true;
 }
 
 }  // namespace content