Enable the volume slider in Ash for windows.

chrome/browser/notifications/desktop_notifications_unittest.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 CHROME_BROWSER_NOTIFICATIONS_DESKTOP_NOTIFICATIONS_UNITTEST_H_
 #define CHROME_BROWSER_NOTIFICATIONS_DESKTOP_NOTIFICATIONS_UNITTEST_H_
 
 #include <deque>
 #include <string>
 
 #include "base/message_loop/message_loop.h"
 #include "base/prefs/testing_pref_service.h"
 #include "chrome/browser/notifications/balloon_collection_impl.h"
 #include "chrome/browser/notifications/balloon_notification_ui_manager.h"
 #include "chrome/browser/notifications/desktop_notification_service.h"
 #include "chrome/browser/notifications/notification.h"
 #include "chrome/browser/notifications/notification_test_util.h"
 #include "chrome/test/base/testing_browser_process.h"
 #include "chrome/test/base/testing_profile.h"
 #include "content/public/test/render_view_test.h"
 #include "content/public/test/test_browser_thread.h"
 #include "testing/gtest/include/gtest/gtest.h"
 
+#if defined(OS_WIN)

[dewittj, 2014/03/03 22:48:55]

Probably should read:
defined(OS_WIN) && defined(USE_ASH)

+#include "base/win/scoped_com_initializer.h"
+#endif
+
 #if defined(USE_AURA)
 namespace views {
 namespace corewm {
 class WMState;
 }
 }
 #endif
 
 class ActiveDesktopMonitor;
 class DesktopNotificationsTest;
@@ skipping 93 matching lines @@
   // Real DesktopNotificationService
   scoped_ptr<DesktopNotificationService> service_;
 
   // Contains the cumulative output of the unit test.
   static std::string log_output_;
 
  private:
 #if defined(USE_AURA)
   scoped_ptr<views::corewm::WMState> wm_state_;
 #endif
+#if defined(OS_WIN)

[dewittj, 2014/03/03 22:48:55]

same here

+  scoped_ptr<base::win::ScopedCOMInitializer> com_initializer_;
+#endif
 
   DISALLOW_COPY_AND_ASSIGN(DesktopNotificationsTest);
 };
 
 #endif  // CHROME_BROWSER_NOTIFICATIONS_DESKTOP_NOTIFICATIONS_UNITTEST_H_