Tracking rbe tools with a GN target

webrtc/modules/remote_bitrate_estimator/tools/bwe_rtp.cc

Index: webrtc/modules/remote_bitrate_estimator/tools/bwe_rtp.cc
diff --git a/webrtc/modules/remote_bitrate_estimator/tools/bwe_rtp.cc b/webrtc/modules/remote_bitrate_estimator/tools/bwe_rtp.cc
index de0d5ea9e0131463c698ce0ad33584848fc129bc..d8493982c01737bcdf965cc9cbd3327a9a15679d 100644
--- a/webrtc/modules/remote_bitrate_estimator/tools/bwe_rtp.cc
+++ b/webrtc/modules/remote_bitrate_estimator/tools/bwe_rtp.cc
@@ -79,7 +79,7 @@ bool ParseArgsAndSetupEstimator(int argc,
   if (rtc::FlagList::SetFlagsFromCommandLine(&argc, argv, true)) {
     return 1;
   }
-  if (FLAG_help) {
+  if (flags::FLAG_help) {
     rtc::FlagList::Print(nullptr, false);
     return 0;
   }