Mojo-ifying chrome://version.

components/version_ui/resources/about_version_ios.js

+// Copyright (c) 2011 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.
+
+/**
+ * Callback from the backend with the list of variations to display.
+ * This call will build the variations section of the version page, or hide that
+ * section if there are none to display.
+ * @param {!Array<string>} variationsList The list of variations.
+ */
+function returnVariationInfo(variationsList) {
+  $('variations-section').hidden = !variationsList.length;
+  $('variations-list').appendChild(
+      parseHtmlSubset(variationsList.join('<br>'), ['BR']));
+}
+
+
+/* All the work we do onload. */
+function onLoadWork() {
+  chrome.send('requestVersionInfo');

[Eugene But (OOO till 7-30), 2016/06/01 23:32:00]

Is there a reason why ios is different from other platforms?

[dpapad, 2016/06/01 23:44:11]

The only reason is that at the time I authored this CL initially, I was planning
to actually land it, without breaking IOS. So introducing different JS files for
IOS and for other platforms was the way to go. If IOS Mojo works, then we can
remove this part of the CL and merge the JS files again.

+}
+
+document.addEventListener('DOMContentLoaded', onLoadWork);