Not moving a docked window when restoring a previously maximized window

chrome/browser/ui/views/tabs/tab_drag_controller.h

 // Copyright (c) 2012 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_UI_VIEWS_TABS_TAB_DRAG_CONTROLLER_H_
 #define CHROME_BROWSER_UI_VIEWS_TABS_TAB_DRAG_CONTROLLER_H_
 
 #include <vector>
 
 #include "base/memory/scoped_ptr.h"
@@ skipping 91 matching lines @@
             int source_tab_offset,
             const ui::ListSelectionModel& initial_selection_model,
             DetachBehavior detach_behavior,
             MoveBehavior move_behavior,
             EventSource event_source);
 
   // Returns true if there is a drag underway and the drag is attached to
   // |tab_strip|.
   // NOTE: this returns false if the TabDragController is in the process of
   // finishing the drag.
-  static bool IsAttachedTo(TabStrip* tab_strip);
+  static bool IsAttachedTo(const TabStrip* tab_strip);
 
   // Returns true if there is a drag underway.
   static bool IsActive();
 
   // Used to determine whether the tab drag controller detaches dragged tabs
   // into new browser windows while the drag is in process.
   static bool ShouldDetachIntoNewBrowser();
 
   // Sets the move behavior. Has no effect if started_drag() is true.
   void SetMoveBehavior(MoveBehavior behavior);
@@ skipping 513 matching lines @@
   // See comment around use for more details.
   int attach_x_;
   int attach_index_;
 
   base::WeakPtrFactory<TabDragController> weak_factory_;
 
   DISALLOW_COPY_AND_ASSIGN(TabDragController);
 };
 
 #endif  // CHROME_BROWSER_UI_VIEWS_TABS_TAB_DRAG_CONTROLLER_H_