Implemented new fence syncs which replaces the old sync points.

content/common/gpu/gpu_channel.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/common/gpu/gpu_channel.h"
 
 #if defined(OS_WIN)
 #include <windows.h>
 #endif
 
@@ skipping 788 matching lines @@
   gpu_channel_manager_->RemoveChannel(client_id_);
 }
 
 bool GpuChannel::OnControlMessageReceived(const IPC::Message& msg) {
   bool handled = true;
   IPC_BEGIN_MESSAGE_MAP(GpuChannel, msg)
     IPC_MESSAGE_HANDLER(GpuChannelMsg_CreateOffscreenCommandBuffer,
                         OnCreateOffscreenCommandBuffer)
     IPC_MESSAGE_HANDLER(GpuChannelMsg_DestroyCommandBuffer,
                         OnDestroyCommandBuffer)
+    IPC_MESSAGE_HANDLER(GpuChannelMsg_Nop,
+                        OnNop)
     IPC_MESSAGE_HANDLER_DELAY_REPLY(GpuMsg_CreateJpegDecoder,
                                     OnCreateJpegDecoder)
     IPC_MESSAGE_UNHANDLED(handled = false)
   IPC_END_MESSAGE_MAP()
   DCHECK(handled) << msg.type();
   return handled;
 }
 
 scoped_refptr<gpu::SyncPointClientState> GpuChannel::GetSyncPointClientState() {
   return message_queue_->GetSyncPointClientState();
@@ skipping 195 matching lines @@
   }
 }
 
 void GpuChannel::OnCreateJpegDecoder(int32 route_id, IPC::Message* reply_msg) {
   if (!jpeg_decoder_) {
     jpeg_decoder_.reset(new GpuJpegDecodeAccelerator(this, io_task_runner_));
   }
   jpeg_decoder_->AddClient(route_id, reply_msg);
 }
 
+void GpuChannel::OnNop() {}
+
 void GpuChannel::CacheShader(const std::string& key,
                              const std::string& shader) {
   gpu_channel_manager_->Send(
       new GpuHostMsg_CacheShader(client_id_, key, shader));
 }
 
 void GpuChannel::AddFilter(IPC::MessageFilter* filter) {
   io_task_runner_->PostTask(
       FROM_HERE, base::Bind(&GpuChannelMessageFilter::AddChannelFilter,
                             filter_, make_scoped_refptr(filter)));
@@ skipping 50 matching lines @@
     }
   }
 }
 
 void GpuChannel::HandleUpdateValueState(
     unsigned int target, const gpu::ValueState& state) {
   pending_valuebuffer_state_->UpdateState(target, state);
 }
 
 }  // namespace content