Implement extension controlled indicators, starting with New Tab page

chrome/browser/resources/settings/controls/extension_controlled_indicator.js

+// Copyright 2016 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.
+
+Polymer({
+  is: 'extension-controlled-indicator',
+
+  behaviors: [I18nBehavior],
+
+  properties: {
+    extensionCanBeDisabled: Boolean,
+    extensionId: String,
+    extensionName: String,
+  },
+
+  /**
+   * @param {string} extensionId
+   * @param {string} extensionName
+   * @return {string}
+   * @private
+   */
+  getLabel_: function(extensionId, extensionName) {
+    var manageUrl = 'chrome://extensions/?id=' + assert(this.extensionId);
+    return this.i18n('controlledByExtension',
+        `<a href="${manageUrl}" target="_blank">` +
+        assert(this.extensionName) + '</a>');
+  },
+
+  /** @private */
+  onDisableTap_: function() {
+    assert(this.extensionCanBeDisabled);
+    settings.ExtensionControlBrowserProxyImpl.getInstance().disableExtension(
+        assert(this.extensionId));
+    this.fire('extension-disable');
+  },
+});