Gallery.app: Update thumbnail when a file is edited on the photo editor.

ui/file_manager/gallery/js/ribbon.js

Index: ui/file_manager/gallery/js/ribbon.js
diff --git a/ui/file_manager/gallery/js/ribbon.js b/ui/file_manager/gallery/js/ribbon.js
index 779d97ce7aa5f408769b580939da0a74267e16e4..f56e21a75f3cc7f398e363ac9a1d73ef2c06b72b 100644
--- a/ui/file_manager/gallery/js/ribbon.js
+++ b/ui/file_manager/gallery/js/ribbon.js
@@ -344,7 +344,13 @@ Ribbon.prototype.setThumbnailImage_ = function(thumbnail, entry, metadata) {
  */
 Ribbon.prototype.onContentChange_ = function(event) {
   var url = event.item.getEntry().toURL();
-  this.remapCache_(event.oldEntry.toURL(), url);
+  if (event.oldEntry.toURL() !== url) {
+    this.remapCache_(event.oldEntry.toURL(), url);
+  } else {
+    delete this.renderCache_[url];
+    var index = this.dataModel_.indexOf(event.item);
+    this.renderThumbnail_(index);
+  }
 
   var thumbnail = this.renderCache_[url];
   if (thumbnail && event.metadata)