cc: Remove OutputSurfaceClient::DidSwapBuffers().

content/browser/compositor/offscreen_browser_compositor_output_surface.cc

 // Copyright 2015 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/compositor/offscreen_browser_compositor_output_surface.h"
 
 #include <utility>
 
 #include "base/logging.h"
 #include "build/build_config.h"
@@ skipping 128 matching lines @@
 void OffscreenBrowserCompositorOutputSurface::SwapBuffers(
     cc::CompositorFrame frame) {
   if (reflector_) {
     if (frame.gl_frame_data->sub_buffer_rect ==
         gfx::Rect(frame.gl_frame_data->size))
       reflector_->OnSourceSwapBuffers();
     else
       reflector_->OnSourcePostSubBuffer(frame.gl_frame_data->sub_buffer_rect);
   }
 
-  client_->DidSwapBuffers();
-
   // TODO(oshima): sync with the reflector's SwapBuffersComplete
   // (crbug.com/520567).
   // The original implementation had a flickering issue (crbug.com/515332).
   gpu::gles2::GLES2Interface* gl = context_provider_->ContextGL();
   const GLuint64 fence_sync = gl->InsertFenceSyncCHROMIUM();
   gl->ShallowFlushCHROMIUM();
 
   gpu::SyncToken sync_token;
   gl->GenUnverifiedSyncTokenCHROMIUM(fence_sync, sync_token.GetData());
   context_provider_->ContextSupport()->SignalSyncToken(
       sync_token, base::Bind(&OutputSurface::OnSwapBuffersComplete,
                              weak_ptr_factory_.GetWeakPtr()));
 }
 
 void OffscreenBrowserCompositorOutputSurface::OnReflectorChanged() {
   if (reflector_)
     EnsureBackbuffer();
 }
 
 base::Closure
 OffscreenBrowserCompositorOutputSurface::CreateCompositionStartedCallback() {
   return base::Closure();
 }
 
 }  // namespace content