Send port-closed notification when a frame with ports unloads....

chrome/renderer/render_widget.h

 // Copyright (c) 2009 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 CHROME_RENDERER_RENDER_WIDGET_H_
 #define CHROME_RENDERER_RENDER_WIDGET_H_
 
 #include <vector>
 #include "base/basictypes.h"
 #include "base/gfx/native_widget_types.h"
@@ skipping 78 matching lines @@
                                         WebKit::WebRect* rect);
   virtual void DidMove(WebWidget* webwidget, const WebPluginGeometry& move);
   virtual void RunModal(WebWidget* webwidget) {}
   virtual bool IsHidden(WebWidget* webwidget) { return is_hidden_; }
   virtual WebKit::WebScreenInfo GetScreenInfo(WebWidget* webwidget);
 
   // Invalidates entire widget rect to generate a full repaint.
   void GenerateFullRepaint();
 
   // Close the underlying WebWidget.
-  void Close();
+  virtual void Close();
 
  protected:
   // Friend RefCounted so that the dtor can be non-public. Using this class
   // without ref-counting is an error.
   friend class base::RefCounted<RenderWidget>;
 
   RenderWidget(RenderThreadBase* render_thread, bool activatable);
   virtual ~RenderWidget();
 
   // Initializes this view with the given opener.  CompleteInit must be called
@@ skipping 180 matching lines @@
 
   // While we are waiting for the browser to update window sizes,
   // we track the pending size temporarily.
   int pending_window_rect_count_;
   WebKit::WebRect pending_window_rect_;
 
   DISALLOW_COPY_AND_ASSIGN(RenderWidget);
 };
 
 #endif  // CHROME_RENDERER_RENDER_WIDGET_H_