[MediaSession, Android] Adding visibility tests 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 221 matching lines @@
       'browser/loader/cross_site_resource_handler_browsertest.cc',
       'browser/loader/resource_dispatcher_host_browsertest.cc',
       'browser/manifest/manifest_browsertest.cc',
       'browser/media/encrypted_media_browsertest.cc',
       'browser/media/media_browsertest.cc',
       'browser/media/media_browsertest.h',
       'browser/media/media_canplaytype_browsertest.cc',
       'browser/media/media_source_browsertest.cc',
       'browser/media/session/media_session_browsertest.cc',
       'browser/media/session/media_session_delegate_default_browsertest.cc',
+      'browser/media/session/media_session_visibility_browsertest_base.cc',
+      'browser/media/session/media_session_visibility_browsertest_base.h',
+      'browser/media/session/media_session_visibility_browsertest_instances.cc',
       'browser/media/session/mock_media_session_observer.cc',
       'browser/media/session/mock_media_session_observer.h',
       'browser/memory/memory_pressure_controller_impl_browsertest.cc',
       'browser/message_port_provider_browsertest.cc',
       'browser/mojo_shell_browsertest.cc',
       'browser/net_info_browsertest.cc',
       'browser/renderer_host/input/composited_scrolling_browsertest.cc',
       'browser/renderer_host/input/non_blocking_event_browsertest.cc',
       'browser/renderer_host/input/touch_action_browsertest.cc',
       'browser/renderer_host/input/touch_input_browsertest.cc',
@@ skipping 601 matching lines @@
         '../gpu/blink/gpu_blink.gyp:gpu_blink',
         '../gpu/gpu.gyp:gpu_ipc_common',
         '../ipc/mojo/ipc_mojo.gyp:*',
         '../media/blink/media_blink.gyp:media_blink',
         '../media/media.gyp:media',
         '../media/midi/midi.gyp:midi',
         '../mojo/mojo_edk.gyp:mojo_common_test_support',
         '../mojo/mojo_base.gyp:mojo_application_base',
         '../mojo/mojo_edk.gyp:mojo_system_impl',
         '../mojo/mojo_public.gyp:mojo_cpp_bindings',
-        '../net/net.gyp:net_test_support',  
+        '../net/net.gyp:net_test_support',
         '../ppapi/ppapi_internal.gyp:ppapi_host',
         '../ppapi/ppapi_internal.gyp:ppapi_proxy',
         '../ppapi/ppapi_internal.gyp:ppapi_shared',
         '../ppapi/ppapi_internal.gyp:ppapi_unittest_shared',
         '../skia/skia.gyp:skia',
         '../storage/storage_browser.gyp:storage',
         '../storage/storage_common.gyp:storage_common',
         '../testing/gmock.gyp:gmock',
         '../testing/gtest.gyp:gtest',
         '../third_party/WebKit/public/blink.gyp:blink',
         '../ui/accessibility/accessibility.gyp:ax_gen',
         '../ui/base/ime/ui_base_ime.gyp:ui_base_ime',
         '../ui/base/ui_base.gyp:ui_base',
         '../ui/base/ui_base.gyp:ui_base_test_support',
         '../ui/base/ui_base.gyp:ui_data_pack',
         '../ui/compositor/compositor.gyp:compositor_test_support',
         '../ui/events/events.gyp:dom_keycode_converter',
         '../ui/events/events.gyp:events_base',
         '../ui/events/events.gyp:events_test_support',
         '../ui/events/events.gyp:gesture_detection',
         '../ui/gfx/gfx.gyp:gfx_test_support',
         '../ui/resources/ui_resources.gyp:ui_resources',
         '../ui/surface/surface.gyp:surface',
         '../url/url.gyp:url_lib',
         '../v8/tools/gyp/v8.gyp:v8',
-        'browser/speech/proto/speech_proto.gyp:speech_proto', 
+        'browser/speech/proto/speech_proto.gyp:speech_proto',
         'content_test_mojo_bindings',
         'content.gyp:content_app_both',
         'content.gyp:content_browser',
         'content.gyp:content_child',
         'content.gyp:content_common',
         'content.gyp:content_gpu',
         'content.gyp:content_plugin',
         'content.gyp:content_ppapi_plugin',
         'content.gyp:content_renderer',
         'content.gyp:content_utility',
@@ skipping 1313 matching lines @@
                   'content_unittests_apk.isolate',
                 ],
               },
             ],
           },
         ],
       ],
     }],
   ],
 }