Make cc::CompositorFrames movable [Part 1 of 2]

cc/output/compositor_frame_metadata.h

Index: cc/output/compositor_frame_metadata.h
diff --git a/cc/output/compositor_frame_metadata.h b/cc/output/compositor_frame_metadata.h
index 2ac6a334d83720cc1cfb5633109136cddedd92bd..5f5faa672e60243df024f55033f7f28587da4d92 100644
--- a/cc/output/compositor_frame_metadata.h
+++ b/cc/output/compositor_frame_metadata.h
@@ -23,9 +23,13 @@ namespace cc {
 class CC_EXPORT CompositorFrameMetadata {
  public:
   CompositorFrameMetadata();
-  CompositorFrameMetadata(const CompositorFrameMetadata& other);
+  CompositorFrameMetadata(CompositorFrameMetadata&& other);
   ~CompositorFrameMetadata();
 
+  CompositorFrameMetadata& operator=(CompositorFrameMetadata&& other);
+
+  CompositorFrameMetadata Clone() const;
+
   // The device scale factor used to generate this compositor frame.
   float device_scale_factor;
 
@@ -65,6 +69,9 @@ class CC_EXPORT CompositorFrameMetadata {
 
   // This is the set of Surfaces that are referenced by this frame.
   std::vector<SurfaceId> referenced_surfaces;
+
+ private:
+  CompositorFrameMetadata(const CompositorFrameMetadata& other);

[danakj, 2016/06/24 21:45:18]

also explicitly delete the operator= please. Literally "CFM operator=(const
CFM&) = delete;"

[Fady Samuel, 2016/06/24 22:24:37]

Done.

 };
 
 }  // namespace cc