Move most of ui/views/drag_utils to ui/base/dragdrop so it can be used outside of views. I tried to…

ui/ui.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,
   },
   'includes': [
     'ui_resources.gypi',
@@ skipping 79 matching lines @@
         'base/cocoa/base_view.h',
         'base/cocoa/base_view.mm',
         'base/cocoa/events_mac.mm',
         'base/cocoa/focus_tracker.h',
         'base/cocoa/focus_tracker.mm',
         'base/dragdrop/cocoa_dnd_util.h',
         'base/dragdrop/cocoa_dnd_util.mm',
         'base/dragdrop/drag_drop_types_gtk.cc',
         'base/dragdrop/drag_drop_types.h',
         'base/dragdrop/drag_drop_types_win.cc',
+        'base/dragdrop/drag_utils.cc',
+        'base/dragdrop/drag_utils.h',
+        'base/dragdrop/drag_utils_aura.cc',
+        'base/dragdrop/drag_utils_gtk.cc',
+        'base/dragdrop/drag_utils_win.cc',
         'base/dragdrop/drag_source.cc',
         'base/dragdrop/drag_source.h',
         'base/dragdrop/drop_target.cc',
         'base/dragdrop/drop_target.h',
         'base/dragdrop/gtk_dnd_util.cc',
         'base/dragdrop/gtk_dnd_util.h',
         'base/dragdrop/os_exchange_data.cc',
         'base/dragdrop/os_exchange_data.h',
         'base/dragdrop/os_exchange_data_provider_aura.cc',
         'base/dragdrop/os_exchange_data_provider_aura.h',
@@ skipping 571 matching lines @@
                 'shutil.copyfile(\'<(ui_copy_target)\', \'<(ui_copy_dest)\'); ' \
                 'os.chmod(\'<(ui_copy_dest)\', 0700)'
               ]
             }
           ],
         },
       ],
     }],
   ],
 }