cc: Use correct message loop proxy in BlockingTaskRunner

cc/surfaces/display.h

Index: cc/surfaces/display.h
diff --git a/cc/surfaces/display.h b/cc/surfaces/display.h
index 57d6af4cd24e81994fceac8fabeb7e0d5ce31cf4..c79e5908226876b0c85c22aa6c55e8beafb204cd 100644
--- a/cc/surfaces/display.h
+++ b/cc/surfaces/display.h
@@ -5,6 +5,8 @@
 #ifndef CC_SURFACES_DISPLAY_H_
 #define CC_SURFACES_DISPLAY_H_
 
+#include <set>
+
 #include "base/memory/scoped_ptr.h"
 #include "cc/output/output_surface_client.h"
 #include "cc/output/renderer.h"
@@ -20,6 +22,7 @@ class Size;
 
 namespace cc {
 
+class BlockingTaskRunner;
 class DirectRenderer;
 class DisplayClient;
 class OutputSurface;
@@ -88,6 +91,7 @@ class CC_SURFACES_EXPORT Display : public OutputSurfaceClient,
   scoped_ptr<ResourceProvider> resource_provider_;
   scoped_ptr<SurfaceAggregator> aggregator_;
   scoped_ptr<DirectRenderer> renderer_;
+  scoped_refptr<BlockingTaskRunner> blocking_main_thread_task_runner_;
 
   DISALLOW_COPY_AND_ASSIGN(Display);
 };