Wrap util.js in an IIFE to prevent deploy error

'use strict' can mess up execution of third-party scripts if
they are all concatenated to the same file. To prevent this, code
is wrapped in an immediately-invoked function expression (IIFE).
This ensures that the strict mode is only applied within the scope
of the function it’s wrapped in.

Change-Id: I59e433b419e2e7b85f87cc97d3add577e2c7590e

polygerrit-ui/app/scripts/util.js

@@ -11,20 +11,20 @@
 // WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 // See the License for the specific language governing permissions and
 // limitations under the License.
+(function(window) {
+  'use strict';
 
-'use strict';
+  var util = window.util || {};
 
-var util = util || {};
+  util.parseDate = function(dateStr) {
-
-util.parseDate = function(dateStr) {
     // Timestamps are given in UTC and have the format
     // "'yyyy-mm-dd hh:mm:ss.fffffffff'" where "'ffffffffff'" represents
     // nanoseconds.
     // Munge the date into an ISO 8061 format and parse that.
     return new Date(dateStr.replace(' ', 'T') + 'Z');
-};
+  };
 
-util.htmlEntityMap = {
+  util.htmlEntityMap = {
     '&': '&',
     '<': '&lt;',
     '>': '&gt;',
@@ -32,15 +32,15 @@ util.htmlEntityMap = {
     '\'': '&#39;',
     '/': '&#x2F;',
     '`': '&#96;',
-};
+  };
 
-util.escapeHTML = function(str) {
+  util.escapeHTML = function(str) {
     return str.replace(/[&<>"'`\/]/g, function(s) {
       return util.htmlEntityMap[s];
     });
-};
+  };
 
-util.getCookie = function(name) {
+  util.getCookie = function(name) {
     var key = name + '=';
     var cookies = document.cookie.split(';');
     for (var i = 0; i < cookies.length; i++) {
@@ -53,4 +53,7 @@ util.getCookie = function(name) {
       }
     }
     return '';
-};
+  };
+
+  window.util = util;
+})(window);