Enabling 'gn check' on webrtc/video

webrtc/media/BUILD.gn

Index: webrtc/media/BUILD.gn
diff --git a/webrtc/media/BUILD.gn b/webrtc/media/BUILD.gn
index ea4b8f351e5fa3d89813c8e59c4dad697aeb5a36..b1f768c52e125d359bd0a735e5c9e879097b2b1a 100644
--- a/webrtc/media/BUILD.gn
+++ b/webrtc/media/BUILD.gn
@@ -261,7 +261,7 @@ if (rtc_include_tests) {
     }
   }
 
-  rtc_source_set("rtc_unittest_main") {
+  rtc_source_set("rtc_media_tests_utils") {
     testonly = true
 
     include_dirs = []
@@ -313,7 +313,6 @@ if (rtc_include_tests) {
       "../api/video_codecs:video_codecs_api",
       "../base:rtc_base",
       "../base:rtc_base_approved",
-      "../base:rtc_base_tests_main",
       "../base:rtc_base_tests_utils",
       "../call:call_interfaces",
       "../test:test_support",
@@ -441,13 +440,14 @@ if (rtc_include_tests) {
     deps += [
       ":rtc_media",
       ":rtc_media_base",
-      ":rtc_unittest_main",
+      ":rtc_media_tests_utils",
       "../api:video_frame_api",
       "../api/audio_codecs:builtin_audio_decoder_factory",
       "../api/video_codecs:video_codecs_api",
       "../audio",
       "../base:rtc_base",
       "../base:rtc_base_approved",
+      "../base:rtc_base_tests_main",
       "../base:rtc_base_tests_utils",
       "../call:call_interfaces",
       "../common_video:common_video",