[Cast] Clean-up RtpCastHeader and RtpParser, removing the last WebRTC dependency.

media/cast/cast_testing.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': {
     'include_cast_utility_apps%': 0,
   },
   'targets': [
     {
@@ skipping 28 matching lines @@
         'test/utility/video_utility.h',
         'test/utility/udp_proxy.cc',
         'test/utility/udp_proxy.h',
       ], # source
     },
     {
       'target_name': 'cast_unittests',
       'type': '<(gtest_target_type)',
       'include_dirs': [
         '<(DEPTH)/',
-# TODO(miu): Remove WebRTC dependency (RtpHeader), and then these two deps:
-        '<(DEPTH)/third_party/',
-        '<(DEPTH)/third_party/webrtc/',
       ],
       'dependencies': [
         'cast_base',
         'cast_receiver',
         'cast_rtcp',
         'cast_sender',
         'cast_test_utility',
         'cast_transport',
         '<(DEPTH)/base/base.gyp:test_support_base',
         '<(DEPTH)/net/net.gyp:net',
@@ skipping 160 matching lines @@
             '<(DEPTH)/media/media.gyp:media',
           ],
           'sources': [
             'test/utility/udp_proxy_main.cc',
           ],
         },
       ], # targets
     }],
   ], # conditions
 }