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

ui/views/view_model_utils.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 UI_VIEWS_VIEW_MODEL_UTILS_H_
 #define UI_VIEWS_VIEW_MODEL_UTILS_H_
 #pragma once
 
 #include "base/basictypes.h"
 #include "ui/views/views_export.h"
 
 namespace views {
 
 class View;
 class ViewModel;
 
 class VIEWS_EXPORT ViewModelUtils {
  public:
+  enum Alignment {
+    HORIZONTAL,
+    VERTICAL
+  };
+
   // Sets the bounds of each view to its ideal bounds.
   static void SetViewBoundsToIdealBounds(const ViewModel& model);
 
   // Returns true if the Views in |model| are at their ideal bounds.
   static bool IsAtIdealBounds(const ViewModel& model);
 
-  // Returns the index to move |view| to based on a x-coordinate of |x|.
+  // Returns the index to move |view| to based on a coordinate of |x| and |y|.
   static int DetermineMoveIndex(const ViewModel& model,
                                 View* view,
-                                int x);
+                                Alignment alignment,
+                                int x,
+                                int y);
 
  private:
   DISALLOW_IMPLICIT_CONSTRUCTORS(ViewModelUtils);
 };
 
 }  // namespace views
 
 #endif  // UI_VIEWS_VIEW_MODEL_UTILS_H_