Rearrange dependency to enable adding finch experiment in webrtc

third_party/libjingle/libjingle_common.gypi

 # 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': {
     'nacl_untrusted_build%': 0,
     'webrtc_p2p': "../webrtc/p2p",
     'webrtc_xmpp': "../webrtc/libjingle/xmpp",
   },
   'sources': [
+    'overrides/field_trial.cc',
     '<(webrtc_p2p)/base/asyncstuntcpsocket.cc',
     '<(webrtc_p2p)/base/asyncstuntcpsocket.h',
     '<(webrtc_p2p)/base/basicpacketsocketfactory.cc',
     '<(webrtc_p2p)/base/basicpacketsocketfactory.h',
     '<(webrtc_p2p)/base/candidate.h',
     '<(webrtc_p2p)/base/common.h',
     '<(webrtc_p2p)/base/constants.cc',
     '<(webrtc_p2p)/base/constants.h',
     '<(webrtc_p2p)/base/dtlstransport.h',
     '<(webrtc_p2p)/base/dtlstransportchannel.cc',
@@ skipping 87 matching lines @@
       ],
     }],
     ['(OS!="mac" and OS!="ios") or nacl_untrusted_build==1', {
       'sources/': [
         ['exclude', '/mac[a-z]+\\.(h|cc)$'],
         ['exclude', '/scoped_autorelease_pool\\.(h|mm)$'],
       ],
     }],
   ],
 }