Remove metrics_default from rtc_media dependencies.

webrtc/pc/pc.gyp

 # Copyright (c) 2016 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 61 matching lines @@
     ['include_tests==1', {
       'targets' : [
         {
           'target_name': 'rtc_pc_unittests',
           'type': 'executable',
           'dependencies': [
             '<(webrtc_root)/api/api.gyp:libjingle_peerconnection',
             '<(webrtc_root)/base/base_tests.gyp:rtc_base_tests_utils',
             '<(webrtc_root)/media/media.gyp:rtc_unittest_main',
             '<(webrtc_root)/pc/pc.gyp:rtc_pc',
+            '<(webrtc_root)/system_wrappers/system_wrappers.gyp:metrics_default',
           ],
           'include_dirs': [
             '<(DEPTH)/third_party/libsrtp/srtp',
           ],
           'sources': [
             'bundlefilter_unittest.cc',
             'channel_unittest.cc',
             'channelmanager_unittest.cc',
             'currentspeakermonitor_unittest.cc',
             'mediasession_unittest.cc',
@@ skipping 38 matching lines @@
               'sources': [
                 'rtc_pc_unittests.isolate',
               ],
             },
           ],
         }],
       ],  # conditions
     }],  # include_tests==1
   ],  # conditions
 }