Revert of android: Add draw completion for CompositorView

content/public/browser/android/compositor_client.h

Index: content/public/browser/android/compositor_client.h
diff --git a/content/public/browser/android/compositor_client.h b/content/public/browser/android/compositor_client.h
index bb03a251627771b90e9b613f9ab4c0435a91e757..c6c308d5697715fe75bae67ab76ac588f58d7a67 100644
--- a/content/public/browser/android/compositor_client.h
+++ b/content/public/browser/android/compositor_client.h
@@ -15,13 +15,8 @@
   // Gives the client a chance to update the layer tree host before compositing.
   virtual void UpdateLayerTreeHost() {}
 
-  // The compositor has completed swapping a frame. This is a subset of
-  // DidSwapBuffers and corresponds only to frames where Compositor submits a
-  // new frame.
+  // The compositor has completed swapping a frame.
   virtual void DidSwapFrame(int pending_frames) {}
-
-  // This is called on all swap buffers, regardless of cause.
-  virtual void DidSwapBuffers() {}
 
  protected:
   CompositorClient() {}