Make `git cl upload` work again in third_party/openmax_dl.

Bug: chromium:815165
Change-Id: I27d1c0133cf41050aa891ce67d271acb44f1705c
Reviewed-on: https://webrtc-review.googlesource.com/57161
Reviewed-by: Raymond Toy <rtoy@google.com>

codereview.settings

diff --git a/codereview.settings b/codereview.settings
index 7c6249e..891febb 100644
--- a/codereview.settings
+++ b/codereview.settings
@@ -1,4 +1,5 @@
 CODE_REVIEW_SERVER: codereview.webrtc.org
+GERRIT_HOST: True
 CC_LIST: webrtc-reviews@webrtc.org
 VIEW_VC: https://chromium.googlesource.com/external/webrtc/deps/third_party/openmax/+/
 TRY_ON_UPLOAD: False