Use ContextProvider subclass to provide WGC3D pointers

content/renderer/render_thread_impl.h

 // 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.
 
 #ifndef CONTENT_RENDERER_RENDER_THREAD_IMPL_H_
 #define CONTENT_RENDERER_RENDER_THREAD_IMPL_H_
 
 #include <set>
 #include <string>
 #include <vector>
@@ skipping 40 matching lines @@
 namespace media {
 class AudioHardwareConfig;
 }
 
 namespace v8 {
 class Extension;
 }
 
 namespace webkit {
 namespace gpu {
+class ContextProviderWebContext;
 class GrContextForWebGraphicsContext3D;
 }
 }
 
 namespace content {
 
 class AppCacheDispatcher;
 class AudioInputMessageFilter;
 class AudioMessageFilter;
 class AudioRendererMixerManager;
@@ skipping 184 matching lines @@
   scoped_refptr<base::MessageLoopProxy> GetMediaThreadMessageLoopProxy();
 
   // Causes the idle handler to skip sending idle notifications
   // on the two next scheduled calls, so idle notifications are
   // not sent for at least one notification delay.
   void PostponeIdleNotification();
 
   scoped_refptr<RendererGpuVideoAcceleratorFactories> GetGpuFactories();
 
   scoped_refptr<cc::ContextProvider> OffscreenCompositorContextProvider();
-  scoped_refptr<cc::ContextProvider> SharedMainThreadContextProvider();
+  scoped_refptr<webkit::gpu::ContextProviderWebContext>
+      SharedMainThreadContextProvider();
 
   // AudioRendererMixerManager instance which manages renderer side mixer
   // instances shared based on configured audio parameters.  Lazily created on
   // first call.
   AudioRendererMixerManager* GetAudioRendererMixerManager();
 
   // AudioHardwareConfig contains audio hardware configuration for
   // renderer side clients.  Creation requires a synchronous IPC call so it is
   // lazily created on the first call.
   media::AudioHardwareConfig* GetAudioHardwareConfig();
@@ skipping 228 matching lines @@
   // multiple threads. Current allocation mechanism for IOSurface
   // backed GpuMemoryBuffers prevent this. crbug.com/325045
   base::ThreadChecker allocate_gpu_memory_buffer_thread_checker_;
 
   DISALLOW_COPY_AND_ASSIGN(RenderThreadImpl);
 };
 
 }  // namespace content
 
 #endif  // CONTENT_RENDERER_RENDER_THREAD_IMPL_H_