cc: Get rid of PostSwapBuffersComplete.

blimp/client/core/compositor/blimp_compositor_frame_sink_proxy.h

Index: blimp/client/core/compositor/blimp_compositor_frame_sink_proxy.h
diff --git a/blimp/client/core/compositor/blimp_compositor_frame_sink_proxy.h b/blimp/client/core/compositor/blimp_compositor_frame_sink_proxy.h
index ab995c2913d72d55a7a481de9030acdbc41db75c..ccfe2ea0921e02dfe2123e8a7761dd1e51e3e530 100644
--- a/blimp/client/core/compositor/blimp_compositor_frame_sink_proxy.h
+++ b/blimp/client/core/compositor/blimp_compositor_frame_sink_proxy.h
@@ -24,6 +24,10 @@ class BlimpCompositorFrameSinkProxyClient {
   // compositor frame.
   virtual void ReclaimCompositorResources(
       const cc::ReturnedResourceArray& resources) = 0;
+
+  // Called when SwapCompositorFrame has been processed and another frame
+  // should be started.
+  virtual void SwapCompositorFrameAck() = 0;
 };
 
 // This class is meant to bounce CompositorFrames from the compositor thread's