Dispatch change events when file changes have happened on Drive.

ui/file_manager/file_manager/foreground/js/directory_contents.js

Index: ui/file_manager/file_manager/foreground/js/directory_contents.js
diff --git a/ui/file_manager/file_manager/foreground/js/directory_contents.js b/ui/file_manager/file_manager/foreground/js/directory_contents.js
index 9fbab1860bada90f317eaf9a95dd6c1ff0aaac94..f38b6ff548c69c00fba024a6fa47c4f8ff6d4176 100644
--- a/ui/file_manager/file_manager/foreground/js/directory_contents.js
+++ b/ui/file_manager/file_manager/foreground/js/directory_contents.js
@@ -789,6 +789,7 @@ DirectoryContents.prototype.update = function(updatedEntries, removedUrls) {
   }
 
   var updatedList = [];
+  var updatedIndexes = [];
   for (var i = 0; i < this.fileList_.length; i++) {
     var url = this.fileList_.item(i).toURL();
 
@@ -800,10 +801,14 @@ DirectoryContents.prototype.update = function(updatedEntries, removedUrls) {
 
     if (url in updatedMap) {
       updatedList.push(updatedMap[url]);
+      updatedIndexes.push(i);
       delete updatedMap[url];
     }
   }
 
+  if (updatedIndexes.length > 0)
+    this.fileList_.updateIndexes(updatedIndexes);
+
   var addedList = [];
   for (var url in updatedMap) {
     addedList.push(updatedMap[url]);