Make panel adjust bounds per preferred size change notification on Windows.

content/browser/renderer_host/render_view_host_delegate.h

 // Copyright (c) 2011 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 CONTENT_BROWSER_RENDERER_HOST_RENDER_VIEW_HOST_DELEGATE_H_
 #define CONTENT_BROWSER_RENDERER_HOST_RENDER_VIEW_HOST_DELEGATE_H_
 #pragma once
 
 #include <string>
 #include <vector>
@@ skipping 132 matching lines @@
     virtual void UpdateDragCursor(WebKit::WebDragOperation operation) = 0;
 
     // Notification that view for this delegate got the focus.
     virtual void GotFocus() = 0;
 
     // Callback to inform the browser that the page is returning the focus to
     // the browser's chrome. If reverse is true, it means the focus was
     // retrieved by doing a Shift-Tab.
     virtual void TakeFocus(bool reverse) = 0;
 
-    // The contents' preferred size changed.
-    virtual void UpdatePreferredSize(const gfx::Size& pref_size) = 0;
-
    protected:
     virtual ~View() {}
   };
 
   // RendererManagerment -------------------------------------------------------
   // Functions for managing switching of Renderers. For TabContents, this is
   // implemented by the RenderViewHostManager
 
   class RendererManagement {
    public:
@@ skipping 202 matching lines @@
   virtual void HandleMouseActivate() {}
 
   // Called when a file selection is to be done.
   virtual void RunFileChooser(
       RenderViewHost* render_view_host,
       const ViewHostMsg_RunFileChooser_Params& params) {}
 
   // Notification that the page wants to go into or out of fullscreen mode.
   virtual void ToggleFullscreenMode(bool enter_fullscreen) {}
 
+  // The contents' preferred size changed.
+  virtual void UpdatePreferredSize(const gfx::Size& pref_size) {}
+
  protected:
   virtual ~RenderViewHostDelegate() {}
 };
 
 #endif  // CONTENT_BROWSER_RENDERER_HOST_RENDER_VIEW_HOST_DELEGATE_H_