Nukes the 3 arg TabMoved variant in favor of the 4 arg variant....

chrome/browser/views/tabs/tab_overview_controller.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_VIEWS_TABS_TAB_OVERVIEW_CONTROLLER_H_
 #define CHROME_BROWSER_VIEWS_TABS_TAB_OVERVIEW_CONTROLLER_H_
 
 #include "base/gfx/rect.h"
 #include "base/scoped_ptr.h"
 #include "base/timer.h"
@@ skipping 72 matching lines @@
   void GridAnimationCanceled();
 
   // TabStripModelObserver overrides.
   virtual void TabInsertedAt(TabContents* contents,
                              int index,
                              bool foreground);
   virtual void TabClosingAt(TabContents* contents, int index);
   virtual void TabDetachedAt(TabContents* contents, int index);
   virtual void TabMoved(TabContents* contents,
                         int from_index,
-                        int to_index);
+                        int to_index,
+                        bool pinned_state_changed);
   virtual void TabChangedAt(TabContents* contents, int index,
                             bool loading_only);
   virtual void TabStripEmpty();
   // Currently don't care about these as we're not rendering the selection.
   virtual void TabDeselectedAt(TabContents* contents, int index) { }
   virtual void TabSelectedAt(TabContents* old_contents,
                              TabContents* new_contents,
                              int index,
                              bool user_gesture) { }
 
@@ skipping 77 matching lines @@
   // See description above class for details.
   base::OneShotTimer<TabOverviewController> delay_timer_;
 
   // See description above class for details.
   base::RepeatingTimer<TabOverviewController> configure_timer_;
 
   DISALLOW_COPY_AND_ASSIGN(TabOverviewController);
 };
 
 #endif  // CHROME_BROWSER_VIEWS_TABS_TAB_OVERVIEW_CONTROLLER_H_