cc: Remove OutputSurfaceClient::DidSwapBuffers().

cc/surfaces/surface_display_output_surface.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 "cc/surfaces/surface_display_output_surface.h"
 
 #include "base/bind.h"
 #include "cc/output/compositor_frame.h"
 #include "cc/output/compositor_frame_ack.h"
 #include "cc/surfaces/display.h"
@@ skipping 56 matching lines @@
     if (!delegated_surface_id_.is_null()) {
       factory_.Destroy(delegated_surface_id_);
     }
     delegated_surface_id_ = surface_id_allocator_->GenerateId();
     factory_.Create(delegated_surface_id_);
     last_swap_frame_size_ = frame_size;
   }
   display_->SetSurfaceId(delegated_surface_id_,
                          frame.metadata.device_scale_factor);
 
-  client_->DidSwapBuffers();
-
   factory_.SubmitCompositorFrame(
       delegated_surface_id_, std::move(frame),
       base::Bind(&SurfaceDisplayOutputSurface::SwapBuffersComplete,
                  base::Unretained(this)));
 }
 
 bool SurfaceDisplayOutputSurface::BindToClient(OutputSurfaceClient* client) {
   DCHECK(thread_checker_.CalledOnValidThread());
 
   surface_manager_->RegisterSurfaceFactoryClient(
@@ skipping 68 matching lines @@
   SetMemoryPolicy(policy);
 }
 
 void SurfaceDisplayOutputSurface::SwapBuffersComplete(SurfaceDrawStatus drawn) {
   // TODO(danakj): Why the lost check?
   if (!output_surface_lost_)
     client_->DidSwapBuffersComplete();
 }
 
 }  // namespace cc