drive: Add "Delta Update Status" section to chrome:drive-internals

chrome/browser/resources/chromeos/drive_internals.html

Index: chrome/browser/resources/chromeos/drive_internals.html
diff --git a/chrome/browser/resources/chromeos/drive_internals.html b/chrome/browser/resources/chromeos/drive_internals.html
index a3987253cc4c6442ed9d8b9b6ea46742c519ab92..7dc8e405d37281a74f0a1e9dbc2b5688a10f778d 100644
--- a/chrome/browser/resources/chromeos/drive_internals.html
+++ b/chrome/browser/resources/chromeos/drive_internals.html
@@ -47,6 +47,18 @@
       </tbody>
     </table>
 
+    <h2 id='delta-update-status-section'>Delta Update Status</h2>
+    <ul>
+      <li>Push notification is enabled:
+        <span id='push-notification-enabled'></span></li>
+      <li>Polling interval:
+        <span id='polling-interval-sec'></span> seconds</li>
+      <li>Last update check time:
+        <span id='last-update-check-time'></span></li>
+      <li>Last update check result:
+        <span id='last-update-check-error'></span></li>
+    </ul>
+
     <h2 id='in-flight-operations-section'>In-flight Operations</h2>
     <table>
       <tbody id='in-flight-operations-contents'>