Enable the volume slider in Ash for windows.

chrome/browser/notifications/desktop_notifications_unittest.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 "chrome/browser/notifications/desktop_notifications_unittest.h"
 
 #include "base/prefs/testing_pref_service.h"
 #include "base/strings/string_util.h"
 #include "base/strings/utf_string_conversions.h"
 #include "chrome/browser/notifications/balloon_notification_ui_manager.h"
@@ skipping 89 matching lines @@
 DesktopNotificationsTest::DesktopNotificationsTest()
     : ui_thread_(BrowserThread::UI, &message_loop_),
       balloon_collection_(NULL) {
 }
 
 DesktopNotificationsTest::~DesktopNotificationsTest() {
 }
 
 void DesktopNotificationsTest::SetUp() {
   ui::InitializeInputMethodForTesting();
+#if defined(OS_WIN)

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

same here

+    com_initializer_.reset(new base::win::ScopedCOMInitializer());

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

Please add a comment referencing the code that requires this initializer;
Probably the DesktopNotificationService needs a refactoring so its unit tests
don't have all these outside dependencies.

+#endif
 #if defined(USE_AURA)
   wm_state_.reset(new views::corewm::WMState);
 #endif
 #if defined(USE_ASH)
   ui::ScopedAnimationDurationScaleMode normal_duration_mode(
       ui::ScopedAnimationDurationScaleMode::ZERO_DURATION);
   // The message center is notmally initialized on |g_browser_process| which
   // is not created for these tests.
   message_center::MessageCenter::Initialize();
   // The ContextFactory must exist before any Compositors are created.
@@ skipping 20 matching lines @@
   ash::Shell::DeleteInstance();
   // The message center is notmally shutdown on |g_browser_process| which
   // is not created for these tests.
   message_center::MessageCenter::Shutdown();
   aura::Env::DeleteInstance();
   ui::TerminateContextFactoryForTests();
 #endif
 #if defined(USE_AURA)
   wm_state_.reset();
 #endif
+#if defined(OS_WIN)

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

Same #define comment here.

+    com_initializer_.reset();
+#endif
   ui::ShutdownInputMethodForTesting();
 }
 
 content::ShowDesktopNotificationHostMsgParams
 DesktopNotificationsTest::StandardTestNotification() {
   content::ShowDesktopNotificationHostMsgParams params;
   params.notification_id = 0;
   params.origin = GURL("http://www.google.com");
   params.icon_url = GURL("/icon.png");
   params.title = base::ASCIIToUTF16("Title");
@@ skipping 415 matching lines @@
   }
 
   // Now change the position to upper left.  Confirm that the X value for the
   // balloons gets smaller.
   local_state_.SetInteger(prefs::kDesktopNotificationPosition,
                           BalloonCollection::UPPER_LEFT);
 
   int current_x = (*balloons.begin())->GetPosition().x();
   EXPECT_LT(current_x, last_x);
 }