Added views::ViewModelT<T>, a type-safe template version of ViewModel.

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