Enable the hung plugin detector on Win Aura.

chrome/browser/ui/views/frame/browser_view.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_UI_VIEWS_FRAME_BROWSER_VIEW_H_
 #define CHROME_BROWSER_UI_VIEWS_FRAME_BROWSER_VIEW_H_
 
 #include <map>
 #include <string>
 #include <vector>
@@ skipping 664 matching lines @@
   // True if we have already been initialized.
   bool initialized_;
 
   // True when in ProcessFullscreen(). The flag is used to avoid reentrance and
   // to ignore requests to layout while in ProcessFullscreen() to reduce
   // jankiness.
   bool in_process_fullscreen_;
 
   scoped_ptr<FullscreenExitBubbleViews> fullscreen_bubble_;
 
-#if defined(OS_WIN) && !defined(USE_AURA)
+#if defined(OS_WIN)
   // This object is used to perform periodic actions in a worker
   // thread. It is currently used to monitor hung plugin windows.
   WorkerThreadTicker ticker_;
 
   // This object is initialized with the frame window HWND. This
   // object is also passed as a tick handler with the ticker_ object.
   // It is used to periodically monitor for hung plugin windows
   HungWindowDetector hung_window_detector_;
 
   // This object is invoked by hung_window_detector_ when it detects a hung
@@ skipping 24 matching lines @@
   scoped_ptr<ScrollEndEffectController> scroll_end_effect_controller_;
 
   gfx::ScopedSysColorChangeListener color_change_listener_;
 
   mutable base::WeakPtrFactory<BrowserView> activate_modal_dialog_factory_;
 
   DISALLOW_COPY_AND_ASSIGN(BrowserView);
 };
 
 #endif  // CHROME_BROWSER_UI_VIEWS_FRAME_BROWSER_VIEW_H_