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

chrome/browser/ui/views/apps/chrome_native_app_window_views.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 CHROME_BROWSER_UI_VIEWS_APPS_CHROME_NATIVE_APP_WINDOW_VIEWS_H_
 #define CHROME_BROWSER_UI_VIEWS_APPS_CHROME_NATIVE_APP_WINDOW_VIEWS_H_
 
 #include "apps/ui/views/native_app_window_views.h"
 #include "base/memory/scoped_ptr.h"
 #include "ui/views/context_menu_controller.h"
@@ skipping 48 matching lines @@
 
   // WidgetDelegate implementation.
   virtual gfx::ImageSkia GetWindowAppIcon() OVERRIDE;
   virtual gfx::ImageSkia GetWindowIcon() OVERRIDE;
   virtual views::NonClientFrameView* CreateNonClientFrameView(
       views::Widget* widget) OVERRIDE;
   virtual bool WidgetHasHitTestMask() const OVERRIDE;
   virtual void GetWidgetHitTestMask(gfx::Path* mask) const OVERRIDE;
 
   // views::View implementation.
-  virtual gfx::Size GetPreferredSize() OVERRIDE;
+  virtual gfx::Size GetPreferredSize() const OVERRIDE;
   virtual bool AcceleratorPressed(const ui::Accelerator& accelerator) OVERRIDE;
 
   // NativeAppWindow implementation.
   virtual void SetFullscreen(int fullscreen_types) OVERRIDE;
   virtual bool IsFullscreenOrPending() const OVERRIDE;
   virtual bool IsDetached() const OVERRIDE;
   virtual void UpdateBadgeIcon() OVERRIDE;
   virtual void UpdateShape(scoped_ptr<SkRegion> region) OVERRIDE;
   virtual bool HasFrameColor() const OVERRIDE;
   virtual SkColor ActiveFrameColor() const OVERRIDE;
@@ skipping 28 matching lines @@
       immersive_fullscreen_controller_;
 #endif  // defined(USE_ASH)
 
   // Used to show the system menu.
   scoped_ptr<views::MenuRunner> menu_runner_;
 
   DISALLOW_COPY_AND_ASSIGN(ChromeNativeAppWindowViews);
 };
 
 #endif  // CHROME_BROWSER_UI_VIEWS_APPS_CHROME_NATIVE_APP_WINDOW_VIEWS_H_