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diff --git a/chromium/chrome/browser/resources/settings/internet_page/network_summary_item.js b/chromium/chrome/browser/resources/settings/internet_page/network_summary_item.js
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index 00000000000..c81256c2271
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+++ b/chromium/chrome/browser/resources/settings/internet_page/network_summary_item.js
@@ -0,0 +1,171 @@
+// 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 Polymer element for displaying the network state for a specific
+ * type and a list of networks for that type.
+ */
+(function() {
+
+/** @typedef {chrome.networkingPrivate.DeviceStateProperties} */
+var DeviceStateProperties;
+
+Polymer('cr-network-summary-item', {
+  publish: {
+    /**
+     * True if the list is expanded.
+     *
+     * @attribute expanded
+     * @type {boolean}
+     * @default false
+     */
+    expanded: false,
+
+    /**
+     * The maximum height in pixels for the list of networks.
+     *
+     * @attribute maxHeight
+     * @type {number}
+     * @default 200
+     */
+    maxHeight: 200,
+
+    /**
+     * Device state for the network type.
+     *
+     * @attribute deviceState
+     * @type {?DeviceStateProperties}
+     * @default null
+     */
+    deviceState: null,
+
+    /**
+     * Network state for the active network.
+     *
+     * @attribute networkState
+     * @type {?CrOncDataElement}
+     * @default null
+     */
+    networkState: null,
+
+    /**
+     * List of all network state data for the network type.
+     *
+     * @attribute networkStateList
+     * @type {?Array<!CrOncDataElement>}
+     * @default null
+     */
+    networkStateList: null,
+  },
+
+  /**
+   * Polymer expanded changed method.
+   */
+  expandedChanged: function() {
+    var type = this.deviceState ? this.deviceState.Type : '';
+    this.fire('expanded', {expanded: this.expanded, type: type});
+  },
+
+  /**
+   * Polymer deviceState changed method.
+   */
+  deviceStateChanged: function() {
+    this.updateSelectable_();
+    if (!this.deviceIsEnabled_(this.deviceState))
+      this.expanded = false;
+  },
+
+  /**
+   * Polymer networkStateList changed method.
+   */
+  networkStateListChanged: function() {
+    this.updateSelectable_();
+  },
+
+  /**
+   * @param {?DeviceStateProperties} deviceState The state of a device.
+   * @return {boolean} Whether or not the device state is enabled.
+   * @private
+   */
+  deviceIsEnabled_: function(deviceState) {
+    return deviceState && deviceState.State == 'Enabled';
+  },
+
+  /**
+   * @param {?DeviceStateProperties} deviceState The device state.
+   * @return {boolean} Whether or not to show the UI to enable the network.
+   * @private
+   */
+  deviceEnabledIsVisible_: function(deviceState) {
+    return deviceState &&
+        deviceState.Type != 'Ethernet' && deviceState.Type != 'VPN';
+  },
+
+  /**
+   * @param {?DeviceStateProperties} deviceState The device state.
+   * @param {?Array<!CrOncDataElement>} networkList A list of networks.
+   * @return {boolean} Whether or not to show the UI to expand the list.
+   * @private
+   */
+  expandIsVisible_: function(deviceState, networkList) {
+    if (!this.deviceIsEnabled_(deviceState) || !networkList)
+      return false;
+    var minLength = (this.type == 'WiFi') ? 1 : 2;
+    return networkList.length >= minLength;
+  },
+
+  /**
+   * Event triggered when the details div is clicked on.
+   * @param {!Object} event The enable button event.
+   * @private
+   */
+  onDetailsClicked_: function(event) {
+    if ((event.target.id == 'expandListButton') ||
+        (this.deviceState && !this.deviceIsEnabled_(this.deviceState))) {
+      // Already handled or disabled, do nothing.
+      return;
+    }
+    if (this.expandIsVisible_(this.deviceState, this.networkStateList)) {
+      // Expandable, toggle expand.
+      this.expanded = !this.expanded;
+      return;
+    }
+    // Not expandable, fire 'selected' with |networkState|.
+    this.fire('selected', this.networkState);
+  },
+
+  /**
+   * Event triggered when a cr-network-item is the network list is selected.
+   * @param {!{detail: CrNetworkListItem}} event
+   * @private
+   */
+  onListItemSelected_: function(event) {
+    var onc = event.detail;
+    this.fire('selected', onc);
+  },
+
+  /**
+   * Event triggered when the enable button is toggled.
+   * @param {!Object} event The enable button event.
+   * @private
+   */
+  onDeviceEnabledToggled_: function(event) {
+    var deviceIsEnabled = this.deviceIsEnabled_(this.deviceState);
+    var type = this.deviceState ? this.deviceState.Type : '';
+    this.fire('device-enabled-toggled',
+              {enabled: !deviceIsEnabled, type: type});
+    // Make sure this does not propagate to onDetailsClicked_.
+    event.stopPropagation();
+  },
+
+  /**
+   * Called whenever the 'selectable' state might change.
+   * @private
+   */
+  updateSelectable_: function() {
+    var selectable = this.deviceIsEnabled_(this.deviceState);
+    this.$.details.classList.toggle('selectable', selectable);
+  },
+});
+})();