MD Settings: Add settings-internet-config (WiFi only, no certs)

chrome/browser/resources/settings/internet_page/network_config_select.js

+// Copyright 2017 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.
+
+/**
+ * @fileoverview Polymer element for network configuration selection menus.
+ */
+Polymer({
+  is: 'network-config-select',
+
+  behaviors: [I18nBehavior],
+
+  properties: {
+    label: String,
+
+    disabled: Boolean,
+
+    /**
+     * Array of item values to select from.
+     * @type {!Array<string>}
+     */
+    items: Array,
+
+    /** Prefix used to look up ONC property names. */
+    oncPrefix: String,
+
+    /** Select item value */
+    value: {
+      type: String,
+      notify: true,
+    },
+  },
+
+  observers: ['updateSelected_(items, value)'],
+
+  /**
+   * Ensure that the <select> value is updated when |items| or |value| changes.
+   * @private
+   */
+  updateSelected_: function() {
+    // Wait for the dom-repeat to populate the <option> entries.
+    this.async(function() {
+      var select = this.$$('select');
+      if (select.value != this.value)
+        select.value = this.value;
+    });
+  },
+
+  /**
+   * @param {string} key
+   * @param {string} prefix
+   * @return {string} The text to display for the onc value.
+   * @private
+   */
+  getOncLabel_: function(key, prefix) {
+    var oncKey = 'Onc' + prefix.replace(/\./g, '-') + '_' + key;
+    if (this.i18nExists(oncKey))
+      return this.i18n(oncKey);
+    assertNotReached();
+    return key;
+  },
+});