Remove some dead BrowserPlugin and OOPIF compositing code.

content/browser/renderer_host/render_widget_host_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/browser/renderer_host/render_widget_host_impl.h"
 
 #include <math.h>
 #include <set>
 #include <utility>
 
@@ skipping 1958 matching lines @@
       Send(new ViewMsg_LockMouse_ACK(routing_id_, false));
       return false;
     } else {
       Send(new ViewMsg_LockMouse_ACK(routing_id_, true));
       return true;
     }
   }
 }
 
 // static
-void RenderWidgetHostImpl::AcknowledgeBufferPresent(
-    int32 route_id, int gpu_host_id,
-    const AcceleratedSurfaceMsg_BufferPresented_Params& params) {
-  GpuProcessHostUIShim* ui_shim = GpuProcessHostUIShim::FromID(gpu_host_id);
-  if (ui_shim) {
-    ui_shim->Send(new AcceleratedSurfaceMsg_BufferPresented(route_id,
-                                                            params));
-  }
-}
-
-// static
 void RenderWidgetHostImpl::SendSwapCompositorFrameAck(
     int32 route_id,
     uint32 output_surface_id,
     int renderer_host_id,
     const cc::CompositorFrameAck& ack) {
   RenderProcessHost* host = RenderProcessHost::FromID(renderer_host_id);
   if (!host)
     return;
   host->Send(new ViewMsg_SwapCompositorFrameAck(
       route_id, output_surface_id, ack));
@@ skipping 322 matching lines @@
 }
 #endif
 
 SkColorType RenderWidgetHostImpl::PreferredReadbackFormat() {
   if (view_)
     return view_->PreferredReadbackFormat();
   return kN32_SkColorType;
 }
 
 }  // namespace content