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

chrome/browser/ui/browser_window.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 CHROME_BROWSER_UI_BROWSER_WINDOW_H_
 #define CHROME_BROWSER_UI_BROWSER_WINDOW_H_
 #pragma once
 
 #include "chrome/browser/ui/bookmarks/bookmark_bar.h"
 #include "chrome/common/content_settings_types.h"
@@ skipping 15 matching lines @@
 class TabContentsWrapper;
 class TemplateURL;
 class TemplateURLService;
 #if !defined(OS_MACOSX)
 class ToolbarView;
 #endif
 struct NativeWebKeyboardEvent;
 
 namespace gfx {
 class Rect;
+class Size;
 }
 
 class Extension;
 
 ////////////////////////////////////////////////////////////////////////////////
 // BrowserWindow interface
 //  An interface implemented by the "view" of the Browser window.
 //
 // NOTE: All getters may return NULL.
 class BrowserWindow {
@@ skipping 288 matching lines @@
       const gfx::Rect& bounds) = 0;
 
   // Construct a FindBar implementation for the |browser|.
   virtual FindBar* CreateFindBar() = 0;
 
 #if defined(OS_CHROMEOS)
   // Shows the keyboard overlay dialog box.
   virtual void ShowKeyboardOverlay(gfx::NativeWindow owning_window) = 0;
 #endif
 
+  // Invoked when the preferred size of the contents in current tab has been
+  // changed. We might choose to update the window size to accomodate this
+  // change.
+  // Note that this won't be fired if we change tabs.
+  virtual void UpdatePreferredSize(TabContents* tab_contents,
+                                   const gfx::Size& pref_size) {}
+
   // Construct a BrowserWindow implementation for the specified |browser|.
   static BrowserWindow* CreateBrowserWindow(Browser* browser);
 
  protected:
   friend class BrowserList;
   friend class BrowserView;
   virtual void DestroyBrowser() = 0;
 };
 
 #if defined(OS_WIN) || defined(TOOLKIT_VIEWS)
@@ skipping 24 matching lines @@
 
   // Returns the ToolbarView.
   virtual ToolbarView* GetToolbarView() const = 0;
 #endif
 
  protected:
   virtual ~BrowserWindowTesting() {}
 };
 
 #endif  // CHROME_BROWSER_UI_BROWSER_WINDOW_H_