Add render-side manager for MediaSession

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 781 matching lines @@
       'renderer/media/video_track_to_pepper_adapter_unittest.cc',
     ],
     'content_unittests_android_sources': [
       'browser/android/java/gin_java_method_invocation_helper_unittest.cc',
       'browser/android/java/java_type_unittest.cc',
       'browser/android/java/jni_helper_unittest.cc',
       'browser/android/url_request_content_job_unittest.cc',
       'common/gpu/client/gpu_memory_buffer_impl_surface_texture_unittest.cc',
       'common/gpu/gpu_memory_buffer_factory_surface_texture_unittest.cc',
       'renderer/java/gin_java_bridge_value_converter_unittest.cc',
+      'renderer/media/android/webmediasession_android_unittest.cc',
     ],
     'content_unittests_mac_sources': [
       'common/gpu/client/gpu_memory_buffer_impl_io_surface_unittest.cc',
       'common/gpu/gpu_memory_buffer_factory_io_surface_unittest.cc',
     ],
     'content_unittests_ozone_sources': [
       'common/gpu/client/gpu_memory_buffer_impl_ozone_native_pixmap_unittest.cc',
       'common/gpu/gpu_memory_buffer_factory_ozone_native_pixmap_unittest.cc',
     ],
   },
@@ skipping 1382 matching lines @@
                   'content_unittests_apk.isolate',
                 ],
               },
             ],
           },
         ],
       ],
     }],
   ],
 }