Revert "Remove theme and key map references" This reverts commit 4a9992280bae1ae5537deb7efba7f956bd616a0e. Reason for revert: <INSERT REASONING HERE> Change-Id: Iaf6859b4dd31226d9ad09c363616561903281749
A plugin that uses CodeMirror to provide a rich code editing experience in PolyGerrit.