Highlight.js: style gr-syntax-name as gr-syntax-keyword

On some language modes, most noticeable Clojure mode, the keywords are
known as builtins and converted to gr-syntax-name instead of
gr-syntax-keyword. Given that gr-syntax-name is not styled, the
impression is that the highlighting process doesn't work, even though it
does. Style gr-syntax-name in the same way as gr-syntax-keyword.

Bug: Issue 9389
Change-Id: Ia831ff41749ba7ffcbefead18d657686ce3460ca

polygerrit-ui/app/elements/diff/gr-syntax-themes/gr-theme-default.html

@@ -28,7 +28,8 @@ limitations under the License.
       .gr-syntax-meta {
          color: #FF1717;
       }
-      .gr-syntax-keyword {
+      .gr-syntax-keyword,
+      .gr-syntax-name {
         color: #9E0069;
         line-height: 1em;
       }
@@ -83,4 +84,4 @@ limitations under the License.
       }
     </style>
   </template>
-</dom-module>
+</dom-module>