Add a new GetInstance() method for singleton classes, take 2.

chrome/gpu/gpu_video_service.h

Index: chrome/gpu/gpu_video_service.h
diff --git a/chrome/gpu/gpu_video_service.h b/chrome/gpu/gpu_video_service.h
index e6af4444369429986a19af4c3c2e59e0808dc96b..b9ad6da531bcdb6cf23492fd2fd00845eeed4bfc 100644
--- a/chrome/gpu/gpu_video_service.h
+++ b/chrome/gpu/gpu_video_service.h
@@ -14,9 +14,10 @@
 
 class GpuChannel;
 
-class GpuVideoService : public IPC::Channel::Listener,
-                        public Singleton<GpuVideoService> {
+class GpuVideoService : public IPC::Channel::Listener {
  public:
+  static GpuVideoService* GetInstance();
+
   // IPC::Channel::Listener.
   virtual void OnChannelConnected(int32 peer_pid);
   virtual void OnChannelError();