Merge "Update highlight.js" into stable-2.16
diff --git a/polygerrit-ui/app/elements/diff/gr-syntax-layer/gr-syntax-layer.js b/polygerrit-ui/app/elements/diff/gr-syntax-layer/gr-syntax-layer.js
index 8bf42b7..b8652ee 100644
--- a/polygerrit-ui/app/elements/diff/gr-syntax-layer/gr-syntax-layer.js
+++ b/polygerrit-ui/app/elements/diff/gr-syntax-layer/gr-syntax-layer.js
@@ -49,6 +49,7 @@
     'text/x-go': 'go',
     'text/x-groovy': 'groovy',
     'text/x-haml': 'haml',
+    'text/x-handlebars': 'handlebars',
     'text/x-haskell': 'haskell',
     'text/x-haxe': 'haxe',
     'text/x-ini': 'ini',