Add custom Polymer network icon element

ui/webui/resources/cr_elements/cr_onc/cr_onc_data.js

Index: ui/webui/resources/cr_elements/cr_onc/cr_onc_data.js
diff --git a/ui/webui/resources/cr_elements/cr_onc/cr_onc_data.js b/ui/webui/resources/cr_elements/cr_onc/cr_onc_data.js
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+// 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.
+
+/**
+ * @fileoverview ONC network configuration support class. Wraps a dictionary
+ * object containing ONC managed or unmanaged dictionaries. Also provides
+ * special accessors for ONC properties. See cr-onc-types for ONC types,
+ * e.g. CrOnc.NetworkConfigType. Used by consumers of the
+ * chrome.networkingPrivate API. See components/onc/docs/onc_spec.html.
+ */
+Polymer('cr-onc-data', {
+  publish: {
+    /**
+     * ONC configuration property dictionary, e.g. the result of a
+     * chrome.networkingPrivate.getProperties() call.
+     *
+     * @attribute data
+     * @type CrOnc.NetworkConfigType
+     * @default null
+     */
+    data: null,
+  },
+
+  created: function() {
+    this.data = /** @type {CrOnc.NetworkConfigType} */({});
+  },
+
+  /**
+   * @return {number} The signal strength of the network.
+   */
+  getStrength: function() {
+    var type = this.data.Type;
+    var strength = 0;
+    if (type == 'WiFi')
+      strength = this.data.WiFi ? this.data.WiFi.SignalStrength : 0;
+    else if (type == 'Cellular')
+      strength = this.data.Cellular ? this.data.Cellular.SignalStrength : 0;
+    else if (type == 'WiMAX')
+      strength = this.data.WiMAX ? this.data.WiMAX.SignalStrength : 0;
+    return strength;
+  },
+
+  /**
+   * Returns the WiFi security type. Undefined or empty defaults to 'None'.
+   * @return {string} The WiFi security type.
+   */
+  getWiFiSecurity: function() {
+    return (this.data.WiFi && this.data.WiFi.Security) ?
+        this.data.WiFi.Security : 'None';
+  }
+});