Remove some dead code.

chrome/browser/views/tabs/tab_strip.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_STRIP_H_
 #define CHROME_BROWSER_VIEWS_TABS_TAB_STRIP_H_
 
 #include "base/gfx/point.h"
 #include "base/message_loop.h"
 #include "chrome/browser/tabs/tab_strip_model.h"
@@ skipping 57 matching lines @@
   // Returns true if Tabs in this TabStrip are currently changing size or
   // position.
   bool IsAnimating() const;
 
   // Accessors for the model and individual Tabs.
   TabStripModel* model() { return model_; }
 
   // Returns true if there is an active drag session.
   bool IsDragSessionActive() const { return drag_controller_.get() != NULL; }
 
-  // Aborts any active drag session. This is called from XP/VistaFrame's
-  // end session handler to make sure there are no drag sessions in flight that
-  // could prevent the frame from being closed right away.
-  void AbortActiveDragSession() { EndDrag(true); }
-
   // Destroys the active drag controller.
   void DestroyDragController();
 
   // Removes the drag source Tab from this TabStrip, and deletes it.
   void DestroyDraggedSourceTab(Tab* tab);
 
   // Retrieve the ideal bounds for the Tab at the specified index.
   gfx::Rect GetIdealBounds(int index);
 
   // Updates loading animations for the TabStrip.
@@ skipping 273 matching lines @@
   };
   std::vector<TabData> tab_data_;
 
   // The currently running animation.
   scoped_ptr<TabAnimation> active_animation_;
 
   DISALLOW_COPY_AND_ASSIGN(TabStrip);
 };
 
 #endif  // CHROME_BROWSER_VIEWS_TABS_TAB_STRIP_H_