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

content/browser/tab_contents/tab_contents.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_TAB_CONTENTS_TAB_CONTENTS_H_
 #define CONTENT_BROWSER_TAB_CONTENTS_TAB_CONTENTS_H_
 #pragma once
 
 #include <deque>
 #include <map>
@@ skipping 478 matching lines @@
   int content_restrictions() const { return content_restrictions_; }
   void SetContentRestrictions(int restrictions);
 
   // Query the WebUIFactory for the TypeID for the current URL.
   WebUI::TypeID GetWebUITypeForCurrentState();
 
   // Returns the WebUI for the current state of the tab. This will either be
   // the pending WebUI, the committed WebUI, or NULL.
   WebUI* GetWebUIForCurrentState();
 
+  // Invoked when the preferred size of the contents has been changed.
+  void UpdatePreferredSize(const gfx::Size& pref_size);
+
  protected:
   friend class TabContentsObserver;
 
   // Add and remove observers for page navigation notifications. Adding or
   // removing multiple times has no effect. The order in which notifications
   // are sent to observers is undefined. Clients must be sure to remove the
   // observer before they go away.
   void AddObserver(TabContentsObserver* observer);
   void RemoveObserver(TabContentsObserver* observer);
 
@@ skipping 349 matching lines @@
   ObserverList<TabContentsObserver> observers_;
 
   // Content restrictions, used to disable print/copy etc based on content's
   // (full-page plugins for now only) permissions.
   int content_restrictions_;
 
   DISALLOW_COPY_AND_ASSIGN(TabContents);
 };
 
 #endif  // CONTENT_BROWSER_TAB_CONTENTS_TAB_CONTENTS_H_