Make HWNDMessageHandler build with use_aura==1

ui/views/views.gyp

 # 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.
 {
   'variables': {
     'chromium_code': 1,
   },
 
   'target_defaults': {
     'conditions': [
@@ skipping 435 matching lines @@
           'sources!': [
             'events/event_x.cc',
           ],
         }],
         ['use_aura==0 or OS!="win"', {
           'sources!': [
             'widget/widget_message_filter.cc',
             'widget/widget_message_filter.h',
           ],
         }],
-        ['use_aura==1 or OS!="win"', {
-          'sources!': [
-            'win/fullscreen_handler.cc',
-            'win/fullscreen_handler.h',
-            'win/hwnd_message_handler.cc',
-            'win/hwnd_message_handler.h',
-            'win/hwnd_message_handler_delegate.h',
-            'win/scoped_fullscreen_visibility.cc',
-            'win/scoped_fullscreen_visibility.h',
-          ],
-        }],
         ['OS!="win"', {
           'sources!': [
             'win/fullscreen_handler.cc',
             'win/fullscreen_handler.h',
             'win/hwnd_message_handler.cc',
             'win/hwnd_message_handler.h',
             'win/hwnd_message_handler_delegate.h',
             'win/scoped_fullscreen_visibility.cc',
             'win/scoped_fullscreen_visibility.h',
             'widget/widget_hwnd_utils.cc',
@@ skipping 356 matching lines @@
           'sources/': [
             # This is needed because the aura rule strips it from the default
             # sources list.
             ['include', '^../../content/app/startup_helper_win.cc'],
           ],
         }],
       ],
     },  # target_name: views_examples_with_content_exe
   ],
 }