Revert of cc: Remove frame queuing from the scheduler.

cc/test/test_compositor_frame_sink.h

Index: cc/test/test_compositor_frame_sink.h
diff --git a/cc/test/test_compositor_frame_sink.h b/cc/test/test_compositor_frame_sink.h
index 31d23f2e36f7211b1753c076ac5e3d877b227034..76614e1ca7453c8c6129ff9a62d5be5757d4a56d 100644
--- a/cc/test/test_compositor_frame_sink.h
+++ b/cc/test/test_compositor_frame_sink.h
@@ -78,7 +78,7 @@
   void DisplayDidDrawAndSwap() override;
 
  private:
-  void DidDrawCallback();
+  void DidDrawCallback(bool synchronous);
 
   // TODO(danakj): These don't need to be stored in unique_ptrs when
   // CompositorFrameSink is owned/destroyed on the compositor thread.
@@ -97,6 +97,8 @@
   gfx::Size enlarge_pass_texture_amount_;
 
   std::vector<std::unique_ptr<CopyOutputRequest>> copy_requests_;
+
+  base::WeakPtrFactory<TestCompositorFrameSink> weak_ptrs_;
 };
 
 }  // namespace cc