Update {virtual,override} to follow C++11 style in components.

components/dom_distiller/core/fake_distiller_page.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 COMPONENTS_DOM_DISTILLER_CORE_FAKE_DISTILLER_PAGE_H_
 #define COMPONENTS_DOM_DISTILLER_CORE_FAKE_DISTILLER_PAGE_H_
 
 #include "components/dom_distiller/core/distiller_page.h"
 #include "testing/gmock/include/gmock/gmock.h"
 
 namespace dom_distiller {
 namespace test {
 
 class MockDistillerPageFactory : public DistillerPageFactory {
  public:
   MockDistillerPageFactory();
-  virtual ~MockDistillerPageFactory();
+  ~MockDistillerPageFactory() override;
   MOCK_CONST_METHOD0(CreateDistillerPageImpl, DistillerPage*());
-  virtual scoped_ptr<DistillerPage> CreateDistillerPage(
+  scoped_ptr<DistillerPage> CreateDistillerPage(
       const gfx::Size& render_view_size) const override {
     return scoped_ptr<DistillerPage>(CreateDistillerPageImpl());
   }
-  virtual scoped_ptr<DistillerPage> CreateDistillerPageWithHandle(
+  scoped_ptr<DistillerPage> CreateDistillerPageWithHandle(
       scoped_ptr<SourcePageHandle> handle) const override {
     return scoped_ptr<DistillerPage>(CreateDistillerPageImpl());
   }
 };
 
 class MockDistillerPage : public DistillerPage {
  public:
   MockDistillerPage();
-  virtual ~MockDistillerPage();
+  ~MockDistillerPage() override;
   bool StringifyOutput() override { return false; };
   bool CreateNewContext() override { return false; };
   MOCK_METHOD2(DistillPageImpl,
                void(const GURL& gurl, const std::string& script));
 };
 
 }  // namespace test
 }  // namespace dom_distiller
 
 #endif  // COMPONENTS_DOM_DISTILLER_CORE_FAKE_DISTILLER_PAGE_H_