Reduce creation of ViewsDelegate

ash/test/ash_test_views_delegate.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 ASH_TEST_ASH_TEST_VIEWS_DELEGATE_H_
+#define ASH_TEST_ASH_TEST_VIEWS_DELEGATE_H_
+
+#include "ui/views/test/test_views_delegate.h"
+
+namespace ash {
+namespace test {
+
+// Ash specific ViewsDelegate. In addition to creating a TestWebContents this
+// parents widget with no parent/context to the shell. This is created by
+// default AshTestHelper.
+class AshTestViewsDelegate : public views::TestViewsDelegate {
+ public:
+  AshTestViewsDelegate();
+  virtual ~AshTestViewsDelegate();
+
+  // Overriden from TestViewsDelegate.
+  virtual content::WebContents* CreateWebContents(
+      content::BrowserContext* browser_context,
+      content::SiteInstance* site_instance) OVERRIDE;
+  virtual void OnBeforeWidgetInit(
+      views::Widget::InitParams* params,
+      views::internal::NativeWidgetDelegate* delegate) OVERRIDE;
+
+ private:
+  DISALLOW_COPY_AND_ASSIGN(AshTestViewsDelegate);
+};
+
+}  // namespace test
+}  // namespace ash
+
+#endif  // ASH_TEST_ASH_TEST_VIEWS_DELEGATE_H_
+