VideoToolbox encoder for cast senders.

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.
 
 {
   'targets': [
     {
       # GN version: //media/cast:test_support
       'target_name': 'cast_test_utility',
       'type': 'static_library',
@@ skipping 322 matching lines @@
               'cast_test_utility',
               '<(DEPTH)/base/base.gyp:base',
               '<(DEPTH)/media/media.gyp:media',
             ],
             'sources': [
               'test/utility/tap_proxy.cc',
             ],
           }
         ]
       }
-    ]
-  ], # targets
+    ],
+    ['OS=="ios" or OS=="mac"', {
+      'targets': [
+        {
+          # GN version: //media/cast:cast_h264_vt_encoder_unittests
+          'target_name': 'cast_h264_vt_encoder_unittests',
+          'type': '<(gtest_target_type)',
+          'include_dirs': [
+            '<(DEPTH)/',
+          ],
+          'dependencies': [
+            'cast_base',
+            'cast_sender',
+            'cast_test_utility',
+            '<(DEPTH)/base/base.gyp:test_support_base',
+            '<(DEPTH)/testing/gmock.gyp:gmock',
+            '<(DEPTH)/testing/gtest.gyp:gtest',
+            '<(DEPTH)/third_party/ffmpeg/ffmpeg.gyp:ffmpeg',
+          ],
+          'sources': [
+            'sender/h264_vt_encoder_unittest.cc',
+          ],
+      }], # targets
+    }], # OS=="ios" or OS=="mac"
+  ], # conditions
 }