Fixes the problem of the status bubble obscuring the download shelf....

chrome/browser/status_bubble.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_BROWSER_STATUS_BUBBLE_H_
 #define CHROME_BROWSER_STATUS_BUBBLE_H_
 
 #include <string>
 
 class GURL;
@@ skipping 21 matching lines @@
   virtual void SetURL(const GURL& url, const std::wstring& languages) = 0;
 
   // Skip the fade and instant-hide the bubble.
   virtual void Hide() = 0;
 
   // Called when the user's mouse has moved over web content. This is used to
   // determine when the status area should move out of the way of the user's
   // mouse. This may be windows specific pain due to the way messages are
   // processed for child HWNDs.
   virtual void MouseMoved() = 0;
+
+  // Called when the download shelf becomes visible or invisible.
+  // This is used by to ensure that the status bubble does not obscure
+  // the download shelf, when it is visible.
+  virtual void UpdateDownloadShelfVisibility(bool visible) = 0;
 };
 
 #endif  // #ifndef CHROME_BROWSER_STATUS_BUBBLE_H_