GPU: Adding sync points for cross-channel synchronization

content/common/gpu/gpu_channel_manager.h

Index: content/common/gpu/gpu_channel_manager.h
diff --git a/content/common/gpu/gpu_channel_manager.h b/content/common/gpu/gpu_channel_manager.h
index 9fe1b268cf1ecbdc75f397fb0ca329f19df1a684..187e6f56320dd0c317a53b9892df3fb4e9d02a31 100644
--- a/content/common/gpu/gpu_channel_manager.h
+++ b/content/common/gpu/gpu_channel_manager.h
@@ -32,6 +32,7 @@ class ChildThread;
 class GpuChannel;
 class GpuWatchdog;
 struct GPUCreateCommandBufferConfig;
+class SyncPointManager;
 
 // A GpuChannelManager is a thread responsible for issuing rendering commands
 // managing the lifetimes of GPU channels and forwarding IPC requests from the
@@ -78,6 +79,8 @@ class GpuChannelManager : public IPC::Channel::Listener,
 
   GpuChannel* LookupChannel(int32 client_id);
 
+  SyncPointManager* sync_point_manager() { return sync_point_manager_; }
+
  private:
   // Message handlers.
   void OnEstablishChannel(int client_id, bool share_context);
@@ -106,6 +109,7 @@ class GpuChannelManager : public IPC::Channel::Listener,
   scoped_refptr<gfx::GLShareGroup> share_group_;
   GpuMemoryManager gpu_memory_manager_;
   GpuWatchdog* watchdog_;
+  scoped_refptr<SyncPointManager> sync_point_manager_;
 
   DISALLOW_COPY_AND_ASSIGN(GpuChannelManager);
 };