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

chrome/browser/ui/views/toolbar/toolbar_button_test.cc

 // 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.
 
 #include "base/message_loop/message_loop.h"
 #include "base/strings/utf_string_conversions.h"
 #include "chrome/browser/ui/views/toolbar/toolbar_button.h"
 #include "chrome/test/base/interactive_test_utils.h"
 #include "chrome/test/base/ui_test_utils.h"
 #include "chrome/test/base/view_event_test_base.h"
@@ skipping 20 matching lines @@
   }
 
   virtual void TearDown() OVERRIDE {
     ViewEventTestBase::TearDown();
   }
 
   virtual views::View* CreateContentsView() OVERRIDE {
     return button_;
   }
 
-  virtual gfx::Size GetPreferredSize() OVERRIDE {
+  virtual gfx::Size GetPreferredSize() const OVERRIDE {
     return button_->GetPreferredSize();
   }
 
   // ui::SimpleMenuModel::Delegate implementation.
   virtual bool IsCommandIdChecked(int id) const OVERRIDE {
     return false;
   }
 
   virtual bool IsCommandIdEnabled(int id) const OVERRIDE {
     return true;
@@ skipping 71 matching lines @@
   }
 
  private:
   ToolbarButton* button_;
   bool menu_shown_;
   bool menu_closed_;
 };
 
 // Broken since landed. crbug.com/325055
 VIEW_TEST(ToolbarButtonDragTest, DISABLED_DragActivation)