cc: Clean up OutputSurfaceClient.

cc/surfaces/display.h

Index: cc/surfaces/display.h
diff --git a/cc/surfaces/display.h b/cc/surfaces/display.h
index 40973fc15c747a3510fa94fe27412ef3313c56e7..fd847f4e2eeb6442fe4186d6cd734d61345ab030 100644
--- a/cc/surfaces/display.h
+++ b/cc/surfaces/display.h
@@ -83,21 +83,11 @@ class CC_SURFACES_EXPORT Display : public DisplaySchedulerClient,
   bool DrawAndSwap() override;
 
   // OutputSurfaceClient implementation.
-  void SetBeginFrameSource(BeginFrameSource* source) override;
   void SetNeedsRedrawRect(const gfx::Rect& damage_rect) override;
-  void DidSwapBuffersComplete() override;
+  void DidReceiveSwapBuffersAck() override;
   void DidReceiveTextureInUseResponses(
       const gpu::TextureInUseResponses& responses) override;
-  void ReclaimResources(const ReturnedResourceArray& resources) override;
   void DidLoseOutputSurface() override;
-  void SetExternalTilePriorityConstraints(
-      const gfx::Rect& viewport_rect,
-      const gfx::Transform& transform) override;
-  void SetMemoryPolicy(const ManagedMemoryPolicy& policy) override;
-  void SetTreeActivationCallback(const base::Closure& callback) override;
-  void OnDraw(const gfx::Transform& transform,
-              const gfx::Rect& viewport,
-              bool resourceless_software_draw) override;
 
   // SurfaceObserver implementation.
   void OnSurfaceDamaged(const SurfaceId& surface, bool* changed) override;