Remove GetSharedMainThreadContextProvider from CompositorDependencies.

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 <utility>
@@ skipping 1623 matching lines @@
 }
 
 gpu::GpuMemoryBufferManager* RenderThreadImpl::GetGpuMemoryBufferManager() {
   return gpu_memory_buffer_manager();
 }
 
 scheduler::RendererScheduler* RenderThreadImpl::GetRendererScheduler() {
   return renderer_scheduler_.get();
 }
 
-cc::ContextProvider* RenderThreadImpl::GetSharedMainThreadContextProvider() {
-  return SharedMainThreadContextProvider().get();
-}
-
 std::unique_ptr<cc::BeginFrameSource>
 RenderThreadImpl::CreateExternalBeginFrameSource(int routing_id) {
 #if defined(OS_ANDROID)
   if (sync_compositor_message_filter_) {
     return base::WrapUnique(new SynchronousCompositorExternalBeginFrameSource(
         routing_id, sync_compositor_message_filter_.get()));
   }
 #endif
   return base::WrapUnique(new CompositorExternalBeginFrameSource(
       compositor_message_filter_.get(), sync_message_filter(), routing_id));
@@ skipping 457 matching lines @@
 }
 
 void RenderThreadImpl::PendingRenderFrameConnect::OnConnectionError() {
   size_t erased =
       RenderThreadImpl::current()->pending_render_frame_connects_.erase(
           routing_id_);
   DCHECK_EQ(1u, erased);
 }
 
 }  // namespace content