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

chrome/browser/ui/views/toolbar/browser_action_view.h

 // Copyright 2013 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_TOOLBAR_BROWSER_ACTION_VIEW_H_
 #define CHROME_BROWSER_UI_VIEWS_TOOLBAR_BROWSER_ACTION_VIEW_H_
 
 #include <string>
 
 #include "chrome/browser/extensions/extension_action_icon_factory.h"
@@ skipping 56 matching lines @@
   virtual ~BrowserActionView();
 
   BrowserActionButton* button() { return button_; }
 
   // Gets browser action button icon with the badge.
   gfx::ImageSkia GetIconWithBadge();
 
   // Overridden from views::View:
   virtual void Layout() OVERRIDE;
   virtual void GetAccessibleState(ui::AXViewState* state) OVERRIDE;
-  virtual gfx::Size GetPreferredSize() OVERRIDE;
+  virtual gfx::Size GetPreferredSize() const OVERRIDE;
 
  protected:
   // Overridden from views::View to paint the badge on top of children.
   virtual void PaintChildren(gfx::Canvas* canvas,
                              const views::CullSet& cull_set) OVERRIDE;
 
  private:
   // The Browser object this view is associated with.
   Browser* browser_;
 
@@ skipping 160 matching lines @@
   // The observer that we need to notify when the icon of the button has been
   // updated.
   IconObserver* icon_observer_;
 
   friend class base::DeleteHelper<BrowserActionButton>;
 
   DISALLOW_COPY_AND_ASSIGN(BrowserActionButton);
 };
 
 #endif  // CHROME_BROWSER_UI_VIEWS_TOOLBAR_BROWSER_ACTION_VIEW_H_