Fix plugin placeholder invalidation issue

components/plugins/renderer/webview_plugin.h

 // Copyright 2013 The Chromium Authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 #ifndef COMPONENTS_PLUGINS_RENDERER_WEBVIEW_PLUGIN_H_
 #define COMPONENTS_PLUGINS_RENDERER_WEBVIEW_PLUGIN_H_
 
 #include <list>
 
 #include "base/memory/scoped_ptr.h"
@@ skipping 106 matching lines @@
                              const blink::WebImage& image,
                              const blink::WebPoint& point);
 
   // TODO(ojan): Remove this override and have this class use a non-null
   // layerTreeView.
   virtual bool allowsBrokenNullLayerTreeView() const;
 
   // WebWidgetClient methods:
   virtual void didInvalidateRect(const blink::WebRect&);
   virtual void didChangeCursor(const blink::WebCursorInfo& cursor);
+  virtual void scheduleAnimation();
 
   // WebFrameClient methods:
   virtual void didClearWindowObject(blink::WebLocalFrame* frame);
 
   // This method is defined in WebPlugin as well as in WebFrameClient, but with
   // different parameters. We only care about implementing the WebPlugin
   // version, so we implement this method and call the default in WebFrameClient
   // (which does nothing) to correctly overload it.
   virtual void didReceiveResponse(blink::WebLocalFrame* frame,
                                   unsigned identifier,
@@ skipping 21 matching lines @@
 
   blink::WebURLResponse response_;
   std::list<std::string> data_;
   bool finished_loading_;
   scoped_ptr<blink::WebURLError> error_;
   blink::WebString old_title_;
   bool focused_;
 };
 
 #endif  // COMPONENTS_PLUGINS_RENDERER_WEBVIEW_PLUGIN_H_