views: Make view::Views::GetPreferredSize() const.

apps/ui/views/app_window_frame_view.h

 // Copyright 2014 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 APPS_UI_VIEWS_APP_WINDOW_FRAME_VIEW_H_
 #define APPS_UI_VIEWS_APP_WINDOW_FRAME_VIEW_H_
 
 #include <string>
 
 #include "third_party/skia/include/core/SkColor.h"
@@ skipping 59 matching lines @@
   virtual gfx::Rect GetWindowBoundsForClientBounds(
       const gfx::Rect& client_bounds) const OVERRIDE;
   virtual int NonClientHitTest(const gfx::Point& point) OVERRIDE;
   virtual void GetWindowMask(const gfx::Size& size,
                              gfx::Path* window_mask) OVERRIDE;
   virtual void ResetWindowControls() OVERRIDE {}
   virtual void UpdateWindowIcon() OVERRIDE {}
   virtual void UpdateWindowTitle() OVERRIDE {}
 
   // views::View implementation.
-  virtual gfx::Size GetPreferredSize() OVERRIDE;
+  virtual gfx::Size GetPreferredSize() const OVERRIDE;
   virtual void Layout() OVERRIDE;
   virtual const char* GetClassName() const OVERRIDE;
   virtual void OnPaint(gfx::Canvas* canvas) OVERRIDE;
-  virtual gfx::Size GetMinimumSize() OVERRIDE;
+  virtual gfx::Size GetMinimumSize() const OVERRIDE;
   virtual gfx::Size GetMaximumSize() OVERRIDE;
 
   // views::ButtonListener implementation.
   virtual void ButtonPressed(views::Button* sender,
                              const ui::Event& event) OVERRIDE;
 
   // Some button images we use depend on the color of the frame. This
   // will set these images based on the color of the frame.
   void SetButtonImagesForFrame();
 
@@ skipping 18 matching lines @@
 
   // Size in pixels of the lower-right corner resize handle.
   int resize_area_corner_size_;
 
   DISALLOW_COPY_AND_ASSIGN(AppWindowFrameView);
 };
 
 }  // namespace apps
 
 #endif  // APPS_UI_VIEWS_APP_WINDOW_FRAME_VIEW_H_