Remove {media,p2p,pc,xmllite,xmpp}_tests.gypi files.

webrtc/api/api_tests.gyp

 # Copyright (c) 2015 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', ],
   'targets': [
     {
       'target_name': 'peerconnection_unittests',
       'type': '<(gtest_target_type)',
       'dependencies': [
         '<(DEPTH)/testing/gmock.gyp:gmock',
         '<(webrtc_root)/api/api.gyp:libjingle_peerconnection',
         '<(webrtc_root)/base/base_tests.gyp:rtc_base_tests_utils',
         '<(webrtc_root)/common.gyp:webrtc_common',
-        '<(webrtc_root)/webrtc.gyp:rtc_unittest_main',
+        '<(webrtc_root)/media/media.gyp:rtc_unittest_main',
         '<(webrtc_root)/pc/pc.gyp:rtc_pc',
       ],
       'direct_dependent_settings': {
         'include_dirs': [
           '<(DEPTH)/testing/gmock/include',
         ],
       },
       'defines': [
         # Feature selection.
         'HAVE_SCTP',
@@ skipping 158 matching lines @@
             '../build/isolate.gypi',
           ],
           'sources': [
             'peerconnection_unittests.isolate',
           ],
         },
       ],  # targets
     }],  # test_isolation_mode != "noop"
   ],  # conditions
 }