Enabling 'gn check' on all //webrtc/modules

.gn

Index: .gn
diff --git a/.gn b/.gn
index 3d3776ce55e3178d46860347e4f946d1504d744c..4b2edf0ffcc9a819ca9dc9aa13a0a5665b37694c 100644
--- a/.gn
+++ b/.gn
@@ -29,22 +29,7 @@ check_targets = [
   "//webrtc/common_audio/*",
   "//webrtc/examples/*",
   "//webrtc/media/*",
-  "//webrtc/modules/audio_coding/*",
-  "//webrtc/modules/audio_conference_mixer/*",
-  "//webrtc/modules/audio_device/*",
-  "//webrtc/modules/audio_mixer/*",
-  "//webrtc/modules/audio_processing/*",
-  "//webrtc/modules/bitrate_controller/*",
-  "//webrtc/modules/congestion_controller/*",
-  "//webrtc/modules/desktop_capture/*",
-  "//webrtc/modules/media_file/*",
-  "//webrtc/modules/pacing/*",
-  "//webrtc/modules/rtp_rtcp/*",
-  "//webrtc/modules/utility/*",
-  "//webrtc/modules/video_capture/*",
-  "//webrtc/modules/video_coding/*",
-  "//webrtc/modules/video_processing/*",
-  "//webrtc/modules/remote_bitrate_estimator/*",
+  "//webrtc/modules/*",
   "//webrtc/stats/*",
   "//webrtc/voice_engine/*",
 ]