Delete multipart.h.

webrtc/base/base.gyp

 # Copyright (c) 2014 The WebRTC project authors. All Rights Reserved.
 #
 # Use of this source code is governed by a BSD-style license
 # that can be found in the LICENSE file in the root of the source
 # tree. An additional intellectual property rights grant can be found
 # in the file PATENTS.  All contributing project authors may
 # be found in the AUTHORS file in the root of the source tree.
 
 {
   'includes': [ '../build/common.gypi', ],
@@ skipping 397 matching lines @@
             'bandwidthsmoother.h',
             'callback.h',
             'fileutils_mock.h',
             'httpserver.cc',
             'httpserver.h',
             'json.cc',
             'json.h',
             'logsinks.cc',
             'logsinks.h',
             'mathutils.h',
-            'multipart.cc',
-            'multipart.h',
             'natserver.cc',
             'natserver.h',
             'natsocketfactory.cc',
             'natsocketfactory.h',
             'nattypes.cc',
             'nattypes.h',
             'optionsfile.cc',
             'optionsfile.h',
             'profiler.cc',
             'profiler.h',
@@ skipping 235 matching lines @@
     },
     {
      'target_name': 'gtest_prod',
       'type': 'static_library',
       'sources': [
         'gtest_prod_util.h',
       ],
     },
   ],
 }