[MD settings] update i18n replacements in bluetooth settings

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

 <link rel="import" href="chrome://resources/html/polymer.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/paper-button/paper-button.html">
 <link rel="import" href="chrome://resources/polymer/v1_0/paper-icon-button/paper-icon-button.html">
 <link rel="import" href="chrome://resources/polymer/v1_0/paper-input/paper-input.html">
 <link rel="import" href="chrome://md-settings/bluetooth_page/bluetooth_dialog_shared_css.html">
 <link rel="import" href="chrome://md-settings/icons.html">
 <link rel="import" href="chrome://md-settings/settings_shared_css.html">
 
 <dom-module id="settings-bluetooth-pair-device-dialog">
   <template>
     <style include="settings-shared"></style>
     <style include="bluetooth-dialog-shared"></style>
     <div id="dialogOuterDiv" class="layout vertical flex">
       <div id="dialogHeaderDiv" class="settings-box layout horizontal center">
-        <span id="dialogTitle" class="flex"
-            i18n-content="bluetoothPairDevicePageTitle">
+        <span id="dialogTitle" class="flex">
+          $i18n{bluetoothPairDevicePageTitle}
         </span>
         <paper-icon-button id="close" icon="settings:close"
             on-tap="onCancelTap_">
         </paper-icon-button>
       </div>
       <div id="pairing"
           class="settings-blox layout vertical center center-justified flex">
         <div id="dialogMessage">
           [[getMessage_(pairingDevice, pairingEvent)]]
         </div>
@@ skipping 10 matching lines @@
                 [[getPinDigit_(pairingEvent, index)]]
             </span>
           </template>
           <span class$="[[getPinClass_(pairingEvent, -1)]]"
               hidden="[[showAcceptReject_(pairingEvent)]]">
               [[i18n('bluetoothEnterKey')]]
           </span>
         </div>
       </div>
       <div id="dialogFooterDiv" class="layout horizontal center end-justified">
-        <paper-button i18n-content="bluetoothAccept"
+        <paper-button
             hidden$="[[!showAcceptReject_(pairingEvent)]]"
-            on-tap="onAcceptTap_">
-        </paper-button>
-        <paper-button i18n-content="bluetoothReject"
+            on-tap="onAcceptTap_">$i18n{bluetoothAccept}</paper-button>
+        <paper-button
             hidden$="[[!showAcceptReject_(pairingEvent)]]"
-            on-tap="onRejectTap_">
-        </paper-button>
-        <paper-button i18n-content="bluetoothConnect"
+            on-tap="onRejectTap_">$i18n{bluetoothReject}</paper-button>
+        <paper-button
             hidden$="[[!showConnect_(pairingEvent)]]"
-            on-tap="onConnectTap_">
-        </paper-button>
-        <paper-button i18n-content="bluetoothDismiss"
+            on-tap="onConnectTap_">$i18n{bluetoothConnect}</paper-button>
+        <paper-button
             hidden$="[[!showDismiss_(pairingDevice, pairingEvent)]]"
-            on-tap="onDismissTap_">
-        </paper-button>
-        <paper-button i18n-content="cancel" on-tap="onCancelTap_"
+            on-tap="onDismissTap_">$i18n{bluetoothDismiss}</paper-button>
+        <paper-button on-tap="onCancelTap_"
             hidden$="[[showDismiss_(pairingDevice, pairingEvent)]]">
+          $i18n{cancel}
         </paper-button>
       </div>
     </div>
   </template>
   <script src="bluetooth_pair_device_dialog.js"></script>
 </dom-module>