Enable immersive fullscreen on Windows Ash.

chrome/browser/ui/views/location_bar/zoom_bubble_view_browsertest.cc

 // Copyright 2013 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/ui/views/location_bar/zoom_bubble_view.h"
 
 #include "chrome/browser/ui/browser_commands.h"
 #include "chrome/browser/ui/fullscreen/fullscreen_controller.h"
 #include "chrome/browser/ui/fullscreen/fullscreen_controller_test.h"
 #include "chrome/browser/ui/views/frame/browser_view.h"
@@ skipping 44 matching lines @@
 
   // Exit fullscreen before ending the test for the sake of sanity.
   {
     scoped_ptr<FullscreenNotificationObserver> waiter(
         new FullscreenNotificationObserver());
     chrome::ToggleFullscreenMode(browser());
     waiter->Wait();
   }
 }
 
-// Immersive fullscreen is CrOS only for now.
+// TODO(zturner): Change this to USE_ASH after fixing the test on Windows.
 #if defined(OS_CHROMEOS)
 // Test whether the zoom bubble is anchored and whether it is visible when in
 // immersive fullscreen.
 IN_PROC_BROWSER_TEST_F(ZoomBubbleBrowserTest, ImmersiveFullscreen) {
   BrowserView* browser_view = static_cast<BrowserView*>(browser()->window());
   content::WebContents* web_contents = browser_view->GetActiveWebContents();
 
   ImmersiveModeController* immersive_controller =
       browser_view->immersive_mode_controller();
   immersive_controller->SetupForTest();
@@ skipping 41 matching lines @@
 
   // Exit fullscreen before ending the test for the sake of sanity.
   {
     scoped_ptr<FullscreenNotificationObserver> waiter(
         new FullscreenNotificationObserver());
     chrome::ToggleFullscreenMode(browser());
     waiter->Wait();
   }
 }
 #endif  // OS_CHROMEOS