Update syntax highlighting support

Adds new languages and removes an unused language. The built, minified
and gzipped size of the HighlightJS library increases from 17KB to 25KB.

Change-Id: Id3c83e5b0592b85c9f2adf53f07b6852966dcced

lib/highlightjs/building.md

@@ -22,8 +22,35 @@ languages included. Build it with the following:
     $>  # start in some temp directory
     $>  git clone https://github.com/isagalaev/highlight.js.git
     $>  cd highlight.js
-    $>  node tools/build.js -n json css xml html javascript cpp go haskell \
-            markdown perl python bash sql scala prolog java objectivec
+    $>  node tools/build.js -n \
+          bash \
+          cpp \
+          cs \
+          clojure \
+          css \
+          d \
+          dart \
+          go \
+          haskell \
+          java \
+          javascript \
+          json \
+          lisp \
+          lua \
+          markdown \
+          objectivec \
+          ocaml \
+          perl \
+          protobuf \
+          python \
+          ruby \
+          rust \
+          scala \
+          sql \
+          swift \
+          typescript \
+          xml \
+          yaml
 
 The resulting JS file will appear in the "build" directory of the Highlight.js
 repo under the name "highlight.pack.js".

polygerrit-ui/app/elements/diff/gr-syntax-layer/gr-syntax-layer.js

@@ -15,21 +15,35 @@
   'use strict';
 
   var LANGUAGE_MAP = {
+    'application/dart': 'dart',
     'application/json': 'json',
+    'application/typescript': 'typescript',
     'text/css': 'css',
     'text/html': 'html',
     'text/javascript': 'js',
+    'text/x-clojure': 'clojure',
+    'text/x-common-lisp': 'lisp',
+    'text/x-csharp': 'csharp',
+    'text/x-csrc': 'cpp',
     'text/x-c++src': 'cpp',
+    'text/x-d': 'd',
     'text/x-go': 'go',
     'text/x-haskell': 'haskell',
     'text/x-java': 'java',
+    'text/x-lua': 'lua',
     'text/x-markdown': 'markdown',
     'text/x-objectivec': 'objectivec',
+    'text/x-ocaml': 'ocaml',
     'text/x-perl': 'perl',
+    'text/x-protobuf': 'protobuf',
     'text/x-python': 'python',
+    'text/x-ruby': 'ruby',
+    'text/x-rustsrc': 'rust',
+    'text/x-scala': 'scala',
     'text/x-sh': 'bash',
     'text/x-sql': 'sql',
-    'text/x-scala': 'scala',
+    'text/x-swift': 'swift',
+    'text/x-yaml': 'yaml',
   };
   var ASYNC_DELAY = 10;
   var HLJS_PATH = '../../../bower_components/highlightjs/highlight.min.js';