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

content/test/test_content_client_initializer.cc

+// 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.
+
+#include "content/test/test_content_client_initializer.h"
+
+#include "content/browser/mock_content_browser_client.h"
+#include "content/browser/notification_service_impl.h"
+#include "content/public/common/content_client.h"
+#include "content/test/test_content_client.h"
+
+TestContentClientInitializer::TestContentClientInitializer() {
+  notification_service_.reset(new NotificationServiceImpl());
+
+  DCHECK(!content::GetContentClient());
+  content_client_.reset(new TestContentClient);
+  content::SetContentClient(content_client_.get());
+
+  content_browser_client_.reset(new content::MockContentBrowserClient());
+  content_client_->set_browser(content_browser_client_.get());
+}
+
+TestContentClientInitializer::~TestContentClientInitializer() {
+  notification_service_.reset();
+
+  DCHECK_EQ(content_client_.get(), content::GetContentClient());
+  content::SetContentClient(NULL);
+  content_client_.reset();
+
+  content_browser_client_.reset();
+}