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

chrome/browser/tab_contents/tab_contents_delegate.h

 // Copyright (c) 2006-2008 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_TAB_CONTENTS_TAB_CONTENTS_DELEGATE_H_
 #define CHROME_BROWSER_TAB_CONTENTS_TAB_CONTENTS_DELEGATE_H_
 
 #include "base/basictypes.h"
 #include "base/gfx/native_widget_types.h"
 #include "base/gfx/rect.h"
@@ skipping 71 matching lines @@
   // Notification that some of our content has changed size as
   // part of an animation.
   virtual void ToolbarSizeChanged(TabContents* source, bool is_animating) = 0;
 
   // Notification that the starredness of the current URL changed.
   virtual void URLStarredChanged(TabContents* source, bool starred) = 0;
 
   // Notification that the target URL has changed
   virtual void UpdateTargetURL(TabContents* source, const GURL& url) = 0;
 
+  // Notification that the download shelf visibility state has been toggled.
+  virtual void UpdateDownloadShelfVisibility(bool visible) { }
+
   // Notification that there was a mouse event
   virtual void ContentsMouseEvent(TabContents* source, bool motion) { }
 
   // Request the delegate to change the zoom level of the current tab.
   virtual void ContentsZoomChange(bool zoom_in) { }
 
   // Check whether this contents is inside a window dedicated to running a web
   // application.
   virtual bool IsApplication() { return false; }
 
@@ skipping 72 matching lines @@
   virtual int GetExtraRenderViewHeight() {
     return 0;
   }
 
  protected:
   ~TabContentsDelegate() {}
 
 };
 
 #endif  // CHROME_BROWSER_TAB_CONTENTS_TAB_CONTENTS_DELEGATE_H_