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

content/browser/tab_contents/tab_contents_delegate.h

Index: content/browser/tab_contents/tab_contents_delegate.h
===================================================================
--- content/browser/tab_contents/tab_contents_delegate.h	(revision 96104)
+++ content/browser/tab_contents/tab_contents_delegate.h	(working copy)
@@ -298,6 +298,9 @@
   // and displays nothing.
   virtual content::JavaScriptDialogCreator* GetJavaScriptDialogCreator();
 
+  // Invoked when the preferred size of the contents has been changed.
+  virtual void UpdatePreferredSize(const gfx::Size& pref_size);

[brettw, 2011/08/11 20:06:48]

Although in your case you only have one TabContents, this still doesn't make
sense since the design of this system assumes multiple ones. Can you add a
TabContents parameter as the first argument here like all the rest of the
functions?

[jianli, 2011/08/12 00:55:26]

Done.

+
  protected:
   virtual ~TabContentsDelegate();