Use ContextProvider subclass to provide WGC3D pointers

content/browser/android/in_process/synchronous_compositor_factory_impl.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 "content/browser/android/in_process/synchronous_compositor_factory_impl.h"
 
 #include "content/browser/android/in_process/synchronous_compositor_output_surface.h"
 #include "content/public/browser/browser_thread.h"
 #include "gpu/command_buffer/client/gl_in_process_context.h"
 #include "ui/gl/android/surface_texture.h"
 #include "ui/gl/gl_surface.h"
 #include "webkit/common/gpu/context_provider_in_process.h"
 #include "webkit/common/gpu/webgraphicscontext3d_in_process_command_buffer_impl.h"
 
+using webkit::gpu::ContextProviderWebContext;
+
 namespace content {
 
 namespace {
 
 class VideoContextProvider
     : public StreamTextureFactorySynchronousImpl::ContextProvider {
  public:
   VideoContextProvider(
       const scoped_refptr<cc::ContextProvider>& context_provider,
       gpu::GLInProcessContext* gl_in_process_context)
@@ skipping 41 matching lines @@
   scoped_ptr<SynchronousCompositorOutputSurface> output_surface(
       new SynchronousCompositorOutputSurface(routing_id));
   return output_surface.PassAs<cc::OutputSurface>();
 }
 
 InputHandlerManagerClient*
 SynchronousCompositorFactoryImpl::GetInputHandlerManagerClient() {
   return synchronous_input_event_filter();
 }
 
-scoped_refptr<cc::ContextProvider>
+scoped_refptr<ContextProviderWebContext>
 SynchronousCompositorFactoryImpl::GetOffscreenContextProviderForMainThread() {
   // This check only guarantees the main thread context is created after
   // a compositor did successfully initialize hardware draw in the past.
   // In particular this does not guarantee that the main thread context
   // will fail creation when all compositors release hardware draw.
   bool failed = !CanCreateMainThreadContext();
   if (!failed &&
       (!offscreen_context_for_main_thread_.get() ||
        offscreen_context_for_main_thread_->DestroyedOnMainThread())) {
     offscreen_context_for_main_thread_ =
@@ skipping 113 matching lines @@
   wrapped_gl_context_for_main_thread_ = context.get();
   if (!context.get())
     return scoped_ptr<WebGraphicsContext3DInProcessCommandBufferImpl>();
 
   return scoped_ptr<WebGraphicsContext3DInProcessCommandBufferImpl>(
       WebGraphicsContext3DInProcessCommandBufferImpl::WrapContext(
           context.Pass(), attributes));
 }
 
 }  // namespace content