Make rendering timeouts work even if paint data received early

content/browser/web_contents/web_contents_impl.h

Index: content/browser/web_contents/web_contents_impl.h
diff --git a/content/browser/web_contents/web_contents_impl.h b/content/browser/web_contents/web_contents_impl.h
index 9e779b8be76fa59c5bfaaeaf0b276145c3bee574..f30b60cb34759825cd936eacd3bef71ed4f80f23 100644
--- a/content/browser/web_contents/web_contents_impl.h
+++ b/content/browser/web_contents/web_contents_impl.h
@@ -887,6 +887,7 @@ class CONTENT_EXPORT WebContentsImpl
 #endif  // defined(ENABLE_PLUGINS)
   void OnUpdateFaviconURL(const std::vector<FaviconURL>& candidates);
   void OnFirstVisuallyNonEmptyPaint();
+  void OnFirstPaintAfterLoad();
   void OnMediaPlayingNotification(int64 player_cookie,
                                   bool has_video,
                                   bool has_audio,