[MacViews] Enable dragging a window by its caption/draggable areas.

ui/base/ui_base.gyp

 # Copyright 2014 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,
   },
   'targets': [
     {
@@ skipping 657 matching lines @@
           'dependecies': [
             'ime/ui_base_ime.gyp:ui_base_ime',
           ],
           'sources': [
             'ime/dummy_input_method.cc',
             'ime/dummy_input_method.h',
             'ime/dummy_text_input_client.cc',
             'ime/dummy_text_input_client.h',
             'test/nswindow_fullscreen_notification_waiter.h',
             'test/nswindow_fullscreen_notification_waiter.mm',
+            'test/windowed_nsnotification_observer.h',
+            'test/windowed_nsnotification_observer.mm',
           ],
         }],
         ['use_aura==1', {
           'sources!': [
             'test/ui_controls_mac.mm',
             'test/ui_controls_win.cc',
           ],
         }],
       ],
     },
@@ skipping 16 matching lines @@
            ],
            'variables': {
              'jni_gen_package': 'ui',
            },
            'includes': [ '../../build/jni_generator.gypi' ],
          },
        ],
     }],
   ],
 }