Plumb SetVisible from ui::Compositor to the DirectRenderer.

cc/surfaces/display.h

Index: cc/surfaces/display.h
diff --git a/cc/surfaces/display.h b/cc/surfaces/display.h
index 0fc2fb0a7484bf5f6a4853c93ef61022cb655521..c19a4565835c9568b81a63fa772a313251005fe1 100644
--- a/cc/surfaces/display.h
+++ b/cc/surfaces/display.h
@@ -73,6 +73,7 @@ class CC_SURFACES_EXPORT Display : public DisplaySchedulerClient,
   // device_scale_factor is used to communicate to the external window system
   // what scale this was rendered at.
   void SetSurfaceId(const SurfaceId& id, float device_scale_factor);
+  void SetVisible(bool visible);
   void Resize(const gfx::Size& new_size);
   void SetColorSpace(const gfx::ColorSpace& color_space);
   void SetExternalClip(const gfx::Rect& clip);