Split out the following items from bug 1408121: - Convert arrow panels to use CSS vars -> Also got a green light from :shorlander at the y'all hands to remove the linear gradient on macOS - Convert identity panel images to use context-fill

Comment on attachment 8937490 [details] Bug 1425868 - Consolidate arrow panel styling. https://reviewboard.mozilla.org/r/208164/#review214110 ::: toolkit/themes/windows/global/popup.css:109 (Diff revision 2) > } > > %ifdef XP_WIN > @media (-moz-windows-default-theme) { > .panel-arrowcontent { > --arrowpanel-border-color: hsla(210,4%,10%,.2); This won't affect the arrow's border since the arrow isn't inside panel-arrowcontent. This should probably move to global.css.

Comment on attachment 8937490 [details] Bug 1425868 - Consolidate arrow panel styling. https://reviewboard.mozilla.org/r/208164/#review214138 Looks good, thanks!

Pushed by ntim.bugs@gmail.com: https://hg.mozilla.org/integration/autoland/rev/4f6ed26bdb9b Consolidate arrow panel styling. r=dao

Backed out changeset 4f6ed26bdb9b (bug 1425868) for build bustages on OS X and Windows r=backout on a CLOSED TREE https://treeherder.mozilla.org/logviewer.html#?job_id=152352373&repo=autoland https://hg.mozilla.org/integration/autoland/rev/76667880b457dfce628d8c00007ef37d93b86b2c https://treeherder.mozilla.org/#/jobs?repo=autoland&revision=4f6ed26bdb9bdb374e6555f3856090b931e209f2&filter-resultStatus=usercancel&filter-resultStatus=runnable&filter-resultStatus=testfailed&filter-resultStatus=busted&filter-resultStatus=exception

Pushed by ntim.bugs@gmail.com: https://hg.mozilla.org/integration/autoland/rev/778dfad0f75e Consolidate arrow panel styling. r=dao

Commit pushed to master at https://github.com/mozilla/activity-stream https://github.com/mozilla/activity-stream/commit/1ef8164691910d9eb3ee0812c2881352c46e08f5 chore(styles): Port Bug 1425868 - Activity Stream changes to info panel (#3907)

Change screenshots: https://screenshots.mattn.ca/compare/?oldProject=mozilla-central&oldRev=2d580aeac901ce5c61a4e5445b46906ce3cf33d8&newProject=mozilla-central&newRev=1624b88874765bf57e9feba176d30149c748d9d2&filter=%28controlCenter%7CpermissionPrompts%29_