[Cleanup] Remove mac code from aura/ash/views

ui/aura/env.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 UI_AURA_ENV_H_
 #define UI_AURA_ENV_H_
 
 #include "base/memory/scoped_ptr.h"
 #include "base/message_loop/message_loop.h"
 #include "base/observer_list.h"
@@ skipping 42 matching lines @@
   }
 
   // Whether any touch device is currently down.
   bool is_touch_down() const { return is_touch_down_; }
   void set_touch_down(bool value) { is_touch_down_ = value; }
 
 
   // Returns the native event dispatcher. The result should only be passed to
   // base::RunLoop(dispatcher), or used to dispatch an event by
   // |Dispatch(const NativeEvent&)| on it. It must never be stored.
-#if !defined(OS_MACOSX)
   base::MessageLoop::Dispatcher* GetDispatcher();
-#endif
 
   // Invoked by RootWindow when its host is activated.
   void RootWindowActivated(RootWindow* root_window);
 
  private:
   friend class Window;
   friend class RootWindow;
 
   void Init();
 
@@ skipping 21 matching lines @@
 #if defined(USE_X11)
   DeviceListUpdaterAuraX11 device_list_updater_aurax11_;
 #endif
 
   DISALLOW_COPY_AND_ASSIGN(Env);
 };
 
 }  // namespace aura
 
 #endif  // UI_AURA_ENV_H_