Send compositor frame IPC with metadata.

cc/delegated_compositor_frame.h

Index: cc/delegated_compositor_frame.h
diff --git a/cc/compositor_frame.h b/cc/delegated_compositor_frame.h
similarity index 62%
copy from cc/compositor_frame.h
copy to cc/delegated_compositor_frame.h
index b9f09c14e66f14cb5a02a4e539538938cce20b96..bd5cbc91d1550018e38d80295e26a1209dec9e01 100644
--- a/cc/compositor_frame.h
+++ b/cc/delegated_compositor_frame.h
@@ -2,10 +2,11 @@
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
-#ifndef CC_COMPOSITOR_FRAME_H_
-#define CC_COMPOSITOR_FRAME_H_
+#ifndef CC_DELEGATED_COMPOSITOR_FRAME_H_
+#define CC_DELEGATED_COMPOSITOR_FRAME_H_
 
 #include "cc/cc_export.h"
+#include "cc/compositor_frame.h"
 #include "cc/render_pass.h"
 #include "cc/scoped_ptr_vector.h"
 #include "cc/transferable_resource.h"
@@ -13,10 +14,10 @@
 
 namespace cc {
 
-class CC_EXPORT CompositorFrame {
+class CC_EXPORT DelegatedCompositorFrame : public CompositorFrame {
  public:
-  CompositorFrame();
-  ~CompositorFrame();
+  DelegatedCompositorFrame();
+  ~DelegatedCompositorFrame();
 
   gfx::Size size;
   TransferableResourceList resource_list;
@@ -25,4 +26,4 @@ class CC_EXPORT CompositorFrame {
 
 }  // namespace cc
 
-#endif  // CC_COMPOSITOR_FRAME_H_
+#endif  // CC_DELEGATED_COMPOSITOR_FRAME_H_