gyp: Disable media recording unittests on ChromeCast

content/content_tests.gypi

 # Copyright (c) 2013 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': {
     'layouttest_support_content_sources': [
       'public/test/layouttest_support.h',
       'public/test/nested_message_pump_android.cc',
       'public/test/nested_message_pump_android.h',
@@ skipping 1264 matching lines @@
                 '../testing/android/native_test.gyp:native_test_native_code',
               ],
               'dependencies!': [
                 '../device/battery/battery.gyp:device_battery',
               ],
             }, {  # OS != "android"
               'dependencies': [
                 '../third_party/libvpx_new/libvpx.gyp:libvpx_new',
               ],
             }],
+            ['chromecast == 1', {
+              'sources!': [
+                'renderer/media/audio_track_recorder_unittest.cc',
+                'renderer/media/media_recorder_handler_unittest.cc',
+                'renderer/media/video_track_recorder_unittest.cc',
+              ],
+            }],
             # Avoid windows due to non-availability of cursor resources in test.
             ['OS != "linux"', {
               'sources!': [
               'browser/media/capture/cursor_renderer_aura_unittest.cc',
               ],
             }],
             ['use_aura!=1 and OS!="android"', {
               'sources!': [
                 'browser/renderer_host/input/tap_suppression_controller_unittest.cc',
               ],
@@ skipping 911 matching lines @@
                   'content_unittests_apk.isolate',
                 ],
               },
             ],
           },
         ],
       ],
     }],
   ],
 }