MD Settings: Bluetooth: Update icon and title to reflect state

chrome/browser/resources/settings/bluetooth_page/bluetooth_page.html

 <link rel="import" href="chrome://resources/cr_elements/cr_scrollable_behavior.html">
 <link rel="import" href="chrome://resources/cr_elements/policy/cr_policy_pref_indicator.html">
 <link rel="import" href="chrome://resources/html/i18n_behavior.html">
 <link rel="import" href="chrome://resources/html/polymer.html">
 <link rel="import" href="chrome://resources/polymer/v1_0/iron-collapse/iron-collapse.html">
 <link rel="import" href="chrome://resources/polymer/v1_0/iron-flex-layout/classes/iron-flex-layout.html">
 <link rel="import" href="chrome://resources/polymer/v1_0/iron-list/iron-list.html">
 <link rel="import" href="chrome://resources/polymer/v1_0/neon-animation/neon-animatable.html">
 <link rel="import" href="chrome://resources/polymer/v1_0/paper-button/paper-button.html">
 <link rel="import" href="chrome://resources/polymer/v1_0/paper-toggle-button/paper-toggle-button.html">
@@ skipping 24 matching lines @@
         height: 400px;
         padding: 0;
         width: 500px;
       }
     </style>
     <settings-animated-pages id="pages" section="bluetooth">
       <neon-animatable route-path="default">
         <div class="settings-box first" actionable
             on-tap="toggleDeviceListExpanded_">
           <div class="start layout horizontal">
-            <iron-icon icon="settings:bluetooth"></iron-icon>
-            <span class="middle flex">$i18n{bluetoothEnable}</span>
+            <iron-icon icon="[[getIcon_(bluetoothEnabled_, deviceConnected_)]]">
+            </iron-icon>
+            <span class="middle flex">[[getTitle_(bluetoothEnabled_)]]</span>

[dschuyler, 2016/12/13 00:54:43]

IIUC, when the toggle changes, the text for the toggle will also change? Is
changing the text required by UI?

[stevenjb, 2016/12/13 19:22:36]

See the associated bug, filed by our UX designer :)

             <cr-policy-pref-indicator
                 pref="[[prefs.cros.device.allow_bluetooth]]"
                 hidden="[[prefs.cros.device.allow_bluetooth.value]]">
             </cr-policy-pref-indicator>
             <cr-expand-button id="expandListButton"
                 alt="$i18n{bluetoothExpandA11yLabel}"
                 hidden$="[[!bluetoothEnabled_]]"
                 expanded="{{deviceListExpanded_}}">
             </cr-expand-button>
           </div>
@@ skipping 45 matching lines @@
           on-device-event="onDeviceEvent_"
           on-response="onResponse_"
           pairing-device="[[pairingDevice_]]"
           pairing-event="[[pairingEvent_]]">
       </bluetooth-device-dialog>
     </template>
 
   </template>
   <script src="bluetooth_page.js"></script>
 </dom-module>