Merge "Add /polygerrit-ui/screenshots/Chromium/failed/ to .gitignore" into stable-3.12

.gitignore

diff --git a/.gitignore b/.gitignore
index bc489bc..e04444d 100644
--- a/.gitignore
+++ b/.gitignore
@@ -39,6 +39,7 @@
 /polygerrit-ui/coverage/
 /polygerrit-ui/app/plugins/*
 /polygerrit-ui/screenshots/Chrome/failed/
+/polygerrit-ui/screenshots/Chromium/failed/
 !/plugins/.eslintignore
 !/plugins/.eslintrc.js
 !/plugins/.prettierrc.js