Revert of Implement aura::WindowPortMus::CreateCompositorFrameSink()

ui/aura/mus/window_mus.h

Index: ui/aura/mus/window_mus.h
diff --git a/ui/aura/mus/window_mus.h b/ui/aura/mus/window_mus.h
index 7087bf5488483899346e737a3862dd32f8bb7d04..2f31f3301f47ffa3df3b64eb996cf01a6b959688 100644
--- a/ui/aura/mus/window_mus.h
+++ b/ui/aura/mus/window_mus.h
@@ -90,6 +90,7 @@
       const cc::FrameSinkId& frame_sink_id) = 0;
   virtual const cc::LocalSurfaceId& GetOrAllocateLocalSurfaceId(
       const gfx::Size& new_size) = 0;
+  virtual void SetPrimarySurfaceInfo(const cc::SurfaceInfo& surface_info) = 0;
   virtual void SetFallbackSurfaceInfo(const cc::SurfaceInfo& surface_info) = 0;
   // The window was deleted on the server side. DestroyFromServer() should
   // result in deleting |this|.
@@ -127,8 +128,6 @@
 
   virtual void NotifyEmbeddedAppDisconnected() = 0;
 
-  virtual bool HasLocalCompositorFrameSink() = 0;
-
  private:
   // Just for set_server_id(), which other places should not call.
   friend class WindowTreeClient;