CRASH at Tab::OnMouseReleased...

chrome/browser/views/tabs/tab.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_VIEWS_TABS_TAB_H_
 #define CHROME_BROWSER_VIEWS_TABS_TAB_H_
 
 #include "chrome/browser/tabs/tab_strip_model.h"
 #include "chrome/browser/views/tabs/tab_renderer.h"
 #include "chrome/views/base_button.h"
@@ skipping 48 matching lines @@
         TabStripModel::ContextMenuCommand command_id, Tab* tab) = 0;
     virtual void StopAllHighlighting() = 0;
 
     // Potentially starts a drag for the specified Tab.
     virtual void MaybeStartDrag(Tab* tab, const views::MouseEvent& event) = 0;
 
     // Continues dragging a Tab.
     virtual void ContinueDrag(const views::MouseEvent& event) = 0;
 
     // Ends dragging a Tab. |canceled| is true if the drag was aborted in a way
-    // other than the user releasing the mouse.
-    virtual void EndDrag(bool canceled) = 0;
+    // other than the user releasing the mouse. Returns whether the tab has been
+    // destroyed.
+    virtual bool EndDrag(bool canceled) = 0;
   };
 
   explicit Tab(TabDelegate* delegate);
   virtual ~Tab();
 
   // Access the delegate.
   TabDelegate* delegate() const { return delegate_; }
 
   // Used to set/check whether this Tab is being animated closed.
   void set_closing(bool closing) { closing_ = closing; }
@@ skipping 44 matching lines @@
   bool closing_;
 
   // If non-null it means we're showing a menu for the tab.
   ContextMenuController* menu_controller_;
 
   DISALLOW_COPY_AND_ASSIGN(Tab);
 };
 
 #endif  // CHROME_BROWSER_VIEWS_TABS_TAB_H_