Adds the option of aligning the launcher to the left or right. There

ash/shell.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 ASH_SHELL_H_
 #define ASH_SHELL_H_
 #pragma once
 
 #include <utility>
 #include <vector>
@@ skipping 234 matching lines @@
 
   const ScreenAsh* screen() { return screen_; }
 
   // Force the shelf to query for it's current visibility state.
   void UpdateShelfVisibility();
 
   // Sets/gets the shelf auto-hide behavior.
   void SetShelfAutoHideBehavior(ShelfAutoHideBehavior behavior);
   ShelfAutoHideBehavior GetShelfAutoHideBehavior() const;
 
+  void SetShelfAlignment(ShelfAlignment alignment);
+  ShelfAlignment GetShelfAlignment();
+
   // TODO(sky): don't expose this!
   internal::ShelfLayoutManager* shelf() const { return shelf_; }
 
   SystemTray* tray() const { return tray_.get(); }
 
   // Returns the size of the grid.
   int GetGridSize() const;
 
   // Returns true if in maximized or fullscreen mode.
   bool IsInMaximizedMode() const;
@@ skipping 116 matching lines @@
 
   // Used by ash/shell.
   content::BrowserContext* browser_context_;
 
   DISALLOW_COPY_AND_ASSIGN(Shell);
 };
 
 }  // namespace ash
 
 #endif  // ASH_SHELL_H_