Add use-surfaces command-line flag

content/browser/compositor/gpu_process_transport_factory.h

Index: content/browser/compositor/gpu_process_transport_factory.h
diff --git a/content/browser/compositor/gpu_process_transport_factory.h b/content/browser/compositor/gpu_process_transport_factory.h
index cc35025c72317ce340c0f5929c2eb6835135c2b9..02638969d9e90dae49910467a1641ccea6e6e4f6 100644
--- a/content/browser/compositor/gpu_process_transport_factory.h
+++ b/content/browser/compositor/gpu_process_transport_factory.h
@@ -19,6 +19,10 @@ namespace base {
 class Thread;
 }
 
+namespace cc {
+class SurfaceManager;
+}
+
 namespace content {
 class BrowserCompositorOutputSurface;
 class BrowserCompositorOutputSurfaceProxy;
@@ -78,6 +82,7 @@ class GpuProcessTransportFactory
   scoped_ptr<GLHelper> gl_helper_;
   ObserverList<ImageTransportFactoryObserver> observer_list_;
   base::WeakPtrFactory<GpuProcessTransportFactory> callback_factory_;
+  scoped_ptr<cc::SurfaceManager> surface_manager_;
 
   // The contents of this map and its methods may only be used on the compositor
   // thread.