Output closure-compiled JavaScript files

chrome/browser/resources/enhanced_bookmarks/get_salient_image_url.js

 // Copyright 2015 The Chromium Authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 /*
  * Looks on the page to find the image that could be the most representative
  * one.
  */
 (function() {
   // Extract the referrer policy from the page.
   var referrerPolicy = 'default';
   var metaTags = document.getElementsByTagName('meta');
   for (var i = 0; i < metaTags.length; ++i) {
     if (metaTags[i].name.toLowerCase() == 'referrer') {
       referrerPolicy = metaTags[i].content.toLowerCase();
       break;
     }
   }
 
   // See what to use for JSON. Some pages use a library that overrides JSON.
-  var jsonEncoder = JSON.stringify;
+  var jsonEncoder = JSON['stringify'];

[Dan Beam, 2015/03/06 02:57:28]

is JSON.{encode,stringify} not in the externs?  why is this necessary?

   if (!jsonEncoder)
-    jsonEncoder = JSON.encode;
+    jsonEncoder = JSON['encode'];
 
   // First look if there is an Open Graph Image property available.
   var ogImage = document.querySelector('meta[property=\"og:image\"]');
   if (ogImage) {
     // Checks that the url in ogImage has a path that contains more than just a
     // simple '/'.
     var url = ogImage.content;
     var location = document.createElement('a');
     location.href = url;
     if (location.pathname.length > 1) {
@@ skipping 24 matching lines @@
 
   // Only keep images larger than 320*160.
   if (maxPointSize <= 51200.0 || maxImage === null)
     return '';
 
   return jsonEncoder({
     'imageUrl': maxImage.src,
     'referrerPolicy': referrerPolicy
   });
 })();