cc: Remove OutputSurfaceClient::DidSwapBuffers().

cc/trees/layer_tree_host_impl.cc

 // Copyright 2011 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/trees/layer_tree_host_impl.h"
 
 #include <stddef.h>
 #include <stdint.h>
 
 #include <algorithm>
@@ skipping 1458 matching lines @@
   }
 }
 
 void LayerTreeHostImpl::SetNeedsRedrawRect(const gfx::Rect& damage_rect) {
   if (damage_rect.IsEmpty())
     return;
   NotifySwapPromiseMonitorsOfSetNeedsRedraw();
   client_->SetNeedsRedrawRectOnImplThread(damage_rect);
 }
 
-void LayerTreeHostImpl::DidSwapBuffers() {
-  client_->DidSwapBuffersOnImplThread();
-}
-
 void LayerTreeHostImpl::DidSwapBuffersComplete() {
   client_->DidSwapBuffersCompleteOnImplThread();
 }
 
 void LayerTreeHostImpl::DidReceiveTextureInUseResponses(
     const gpu::TextureInUseResponses& responses) {
   NOTREACHED();
 }
 
 void LayerTreeHostImpl::ReclaimResources(const CompositorFrameAck* ack) {
@@ skipping 2533 matching lines @@
   return task_runner_provider_->HasImplThread();
 }
 
 bool LayerTreeHostImpl::CommitToActiveTree() const {
   // In single threaded mode we skip the pending tree and commit directly to the
   // active tree.
   return !task_runner_provider_->HasImplThread();
 }
 
 }  // namespace cc