Bug: wrong host ID was used to route SwapBuffers ack back to GPU process.

content/browser/gpu/gpu_process_host.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/gpu/gpu_process_host.h"
 
 #include "base/base_switches.h"
 #include "base/bind.h"
 #include "base/bind_helpers.h"
 #include "base/command_line.h"
@@ skipping 562 matching lines @@
   scoped_refptr<AcceleratedPresenter> presenter(
       AcceleratedPresenter::GetForWindow(handle));
   if (!presenter)
     return;
 
   scoped_completion_runner.Release();
   presenter->AsyncPresentAndAcknowledge(
       params.size,
       params.surface_handle,
       base::Bind(&AcceleratedSurfaceBuffersSwappedCompleted,
-                 GpuProcessHost::GPU_PROCESS_KIND_SANDBOXED,
+                 host_id_,
                  params.route_id));
 }
 
 void GpuProcessHost::OnAcceleratedSurfacePostSubBuffer(
     const GpuHostMsg_AcceleratedSurfacePostSubBuffer_Params& params) {
   TRACE_EVENT0("renderer",
       "GpuProcessHost::OnAcceleratedSurfacePostSubBuffer");
 
   NOTIMPLEMENTED();
 }
@@ skipping 159 matching lines @@
     const IPC::ChannelHandle& channel_handle,
     base::ProcessHandle renderer_process_for_gpu,
     const content::GPUInfo& gpu_info) {
   callback.Run(channel_handle, renderer_process_for_gpu, gpu_info);
 }
 
 void GpuProcessHost::CreateCommandBufferError(
     const CreateCommandBufferCallback& callback, int32 route_id) {
   callback.Run(route_id);
 }