Fix webview example in views examples.

ash/test/ash_test_base.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 ASH_TEST_ASH_TEST_BASE_H_
 #define ASH_TEST_ASH_TEST_BASE_H_
 #pragma once
 
 #include "ash/shell.h"
 #include "base/compiler_specific.h"
 #include "base/message_loop.h"
 #include "testing/gtest/include/gtest/gtest.h"
+#include "ui/views/test/test_views_delegate.h"
 
 namespace ash {
 namespace test {
 
+class AshTestViewsDelegate : public views::TestViewsDelegate {
+ public:
+  // Overriden from TestViewsDelegate.
+  virtual content::WebContents* CreateWebContents(
+      content::BrowserContext* browser_context,
+      content::SiteInstance* site_instance) OVERRIDE;
+};
+
 class AshTestBase : public testing::Test {
  public:
   AshTestBase();
   virtual ~AshTestBase();
 
   MessageLoopForUI* message_loop() { return &message_loop_; }
 
   // testing::Test:
   virtual void SetUp() OVERRIDE;
   virtual void TearDown() OVERRIDE;
 
   // Change the primary monitor's configuration to use |bounds|
   // and |scale|.
   void ChangeMonitorConfig(float scale, const gfx::Rect& bounds);
 
  protected:
   void RunAllPendingInMessageLoop();
 
  private:
   MessageLoopForUI message_loop_;
 
   DISALLOW_COPY_AND_ASSIGN(AshTestBase);
 };
 
 }  // namespace test
 }  // namespace ash
 
 #endif  // ASH_TEST_ASH_TEST_BASE_H_