Fix Aura build.

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 390 matching lines @@
           ],
           'sources!': [
             'controls/native_control.cc',
             'controls/native_control.h',
             'controls/scrollbar/bitmap_scroll_bar.cc',
             'controls/scrollbar/bitmap_scroll_bar.h',
             'controls/table/group_table_model.h',
             'controls/table/group_table_view.cc',
             'controls/table/group_table_view.h',
             'controls/table/table_view_observer.h',
-            'drag_utils_win.cc',
             'widget/aero_tooltip_manager.cc',
             'widget/aero_tooltip_manager.h',
             'widget/child_window_message_processor.cc',
             'widget/child_window_message_processor.h',
           ],
           'conditions': [
             ['OS=="mac"', {
               'sources/': [
                 ['exclude', 'mouse_watcher.cc'],
                 ['exclude', 'controls/menu/*'],
@@ skipping 314 matching lines @@
           'msvs_settings': {
             'VCManifestTool': {
               'AdditionalManifestFiles': 'examples\\views_examples.exe.manifest',
             },
           },
         }],
       ],
     },  # target_name: views_examples_lib
   ],
 }