Add chrome://quota-internals/

chrome/browser/resources/quota_internals/event_handler.js

Index: chrome/browser/resources/quota_internals/event_handler.js
diff --git a/chrome/browser/resources/quota_internals/event_handler.js b/chrome/browser/resources/quota_internals/event_handler.js
index 10b6bd345a815dafd817acd7c054d563303fe855..b4f7c5f5ba457d8cb72ee2d11ddc220d9ff19560 100644
--- a/chrome/browser/resources/quota_internals/event_handler.js
+++ b/chrome/browser/resources/quota_internals/event_handler.js
@@ -126,7 +126,7 @@ function dateToText(value) {
   if (result)
     return result;
 
-  var lastAccessTime = new Date(value);
+  var time = new Date(value);
   var now = new Date();
   var delta = Date.now() - value;
 
@@ -154,7 +154,7 @@ function dateToText(value) {
     result = Math.ceil(delta / DAY) + ' day ago ';
   }
 
-  result += '(' + lastAccessTime.toString() + ')';
+  result += '(' + time.toString() + ')';
   return result;
 }
 
@@ -354,8 +354,11 @@ function handleHostData(event) {
  *   |lastAccessTime|:
  *     Last storage access time from the origin.
  *     Number of milliseconds since UNIX epoch (Jan 1, 1970, 0:00:00 UTC).
+ *   |lastModifiedTime|:
+ *     Last modified time of the storage from the origin.
+ *     Number of milliseconds since UNIX epoch.
  *
- * |inUse|, |usedCount| and |lastAccessTime| can be missing,
+ * |inUse|, |usedCount|, |lastAccessTime| and |lastModifiedTime| can be missing,
  * and some additional fields can be included.
  * @param {CustomEvent} event OriginDataUpdated event.
  */
@@ -368,6 +371,7 @@ function handleOriginData(event) {
    *         inUse: {?boolean},
    *         usedCount: {?number},
    *         lastAccessTime: {?number}
+   *         lastModifiedTime: {?number}
    *       }>}
    */
   var dataArray = event.detail;
@@ -425,6 +429,8 @@ function updateDescription() {
                        ['inUse', 'Origin is in use?'],
                        ['usedCount', 'Used count'],
                        ['lastAccessTime', 'Last Access Time',
+                        dateToText],
+                       ['lastModifiedTime', 'Last Modified Time',
                         dateToText]
                       ];
     for (var i = 0; i < keyAndLabel.length; ++i) {