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

chrome/browser/ui/views/location_bar/page_action_with_badge_view.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 CHROME_BROWSER_UI_VIEWS_LOCATION_BAR_PAGE_ACTION_WITH_BADGE_VIEW_H_
 #define CHROME_BROWSER_UI_VIEWS_LOCATION_BAR_PAGE_ACTION_WITH_BADGE_VIEW_H_
 
 #include "base/compiler_specific.h"
 #include "ui/gfx/size.h"
 #include "ui/views/view.h"
 
 class GURL;
 class PageActionImageView;
 
 namespace content {
 class WebContents;
 }
 
 // A container for the PageActionImageView plus its badge.
 class PageActionWithBadgeView : public views::View {
  public:
   explicit PageActionWithBadgeView(PageActionImageView* image_view);
 
   PageActionImageView* image_view() { return image_view_; }
 
   // views::View:
   virtual void GetAccessibleState(ui::AXViewState* state) OVERRIDE;
-  virtual gfx::Size GetPreferredSize() OVERRIDE;
+  virtual gfx::Size GetPreferredSize() const OVERRIDE;
 
   void UpdateVisibility(content::WebContents* contents, const GURL& url);
 
  private:
   virtual void Layout() OVERRIDE;
 
   // The button this view contains.
   PageActionImageView* image_view_;
 
   DISALLOW_COPY_AND_ASSIGN(PageActionWithBadgeView);
 };
 
 #endif  // CHROME_BROWSER_UI_VIEWS_LOCATION_BAR_PAGE_ACTION_WITH_BADGE_VIEW_H_