Re-implement the screensaver to use WebView instead of ExtensionDialogHost.

ui/views/test/webview_test_helper.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 UI_VIEWS_TEST_WEB_VIEW_TEST_HELPER_H_
+#define UI_VIEWS_TEST_WEB_VIEW_TEST_HELPER_H_
+#pragma once
+
+#include "base/memory/scoped_ptr.h"
+
+class MessageLoopForUI;
+
+namespace content {
+class TestContentClientInitializer;
+class TestBrowserThread;
+class MockRenderProcessHostFactory;
+class TestRenderViewHostFactory;
+}  // namespace content
+
+namespace views {
+
+class WebViewTestHelper {
+ public:
+  explicit WebViewTestHelper(MessageLoopForUI* ui_loop);
+  virtual ~WebViewTestHelper();
+
+ private:
+  scoped_ptr<content::TestContentClientInitializer>
+      test_content_client_initializer_;
+
+  scoped_ptr<content::TestBrowserThread> ui_thread_;
+
+  scoped_ptr<content::MockRenderProcessHostFactory> rph_factory_;
+  scoped_ptr<content::TestRenderViewHostFactory> rvh_factory_;
+
+  DISALLOW_COPY_AND_ASSIGN(WebViewTestHelper);
+};
+
+}  // namespace views
+
+#endif  // UI_VIEWS_TEST_WEB_VIEW_TEST_HELPER_H_