Issue the correct Pepper flow control calls in threaded mode

BUG=119821

Review URL: https://chromiumcodereview.appspot.com/9856005

git-svn-id: svn://svn.chromium.org/chrome/trunk/src@128872 0039d316-1c4b-4281-b951-d872f2087c98
diff --git a/content/renderer/render_widget.h b/content/renderer/render_widget.h
index 3f17d53..f6a7484 100644
--- a/content/renderer/render_widget.h
+++ b/content/renderer/render_widget.h
@@ -113,6 +113,7 @@
   virtual bool Send(IPC::Message* msg) OVERRIDE;
 
   // WebKit::WebWidgetClient
+  virtual void willBeginCompositorFrame();
   virtual void didInvalidateRect(const WebKit::WebRect&);
   virtual void didScrollRect(int dx, int dy, const WebKit::WebRect& clipRect);
   virtual void didAutoResize(const WebKit::WebSize& new_size);