Migrate from URLs to Entries in the Files App's gallery.

chrome/browser/resources/file_manager/foreground/js/photo/ribbon.js

Index: chrome/browser/resources/file_manager/foreground/js/photo/ribbon.js
diff --git a/chrome/browser/resources/file_manager/foreground/js/photo/ribbon.js b/chrome/browser/resources/file_manager/foreground/js/photo/ribbon.js
index 04ec68e020cc6bc88204d1aaea8df8480fc8ea80..1259b17d1a0d88ccbd80039d01b4d24dc40feb6d 100644
--- a/chrome/browser/resources/file_manager/foreground/js/photo/ribbon.js
+++ b/chrome/browser/resources/file_manager/foreground/js/photo/ribbon.js
@@ -107,7 +107,7 @@ Ribbon.prototype.onSplice_ = function(event) {
     return;
   }
 
-  var removed = this.renderCache_[event.removed[0].getUrl()];
+  var removed = this.renderCache_[event.removed[0].getEntry().toURL()];
   if (!removed || !removed.parentNode || !removed.hasAttribute('selected')) {
     console.error('Can only remove the selected item');
     return;
@@ -248,7 +248,7 @@ Ribbon.prototype.onSelection_ = function() {
   if (oldSelected) oldSelected.removeAttribute('selected');
 
   var newSelected =
-      this.renderCache_[this.dataModel_.item(selectedIndex).getUrl()];
+      this.renderCache_[this.dataModel_.item(selectedIndex).getEntry().toURL()];
   if (newSelected) newSelected.setAttribute('selected', true);
 };
 
@@ -291,7 +291,7 @@ Ribbon.prototype.removeVanishing_ = function() {
  */
 Ribbon.prototype.renderThumbnail_ = function(index) {
   var item = this.dataModel_.item(index);
-  var url = item.getUrl();
+  var url = item.getEntry().toURL();
 
   var cached = this.renderCache_[url];
   if (cached) {
@@ -311,7 +311,7 @@ Ribbon.prototype.renderThumbnail_ = function(index) {
 
   util.createChild(thumbnail, 'image-wrapper');
 
-  this.metadataCache_.get(url, Gallery.METADATA_TYPE,
+  this.metadataCache_.get(item.getEntry().toURL(), Gallery.METADATA_TYPE,
       this.setThumbnailImage_.bind(this, thumbnail, url));
 
   // TODO: Implement LRU eviction.
@@ -343,7 +343,7 @@ Ribbon.prototype.setThumbnailImage_ = function(thumbnail, url, metadata) {
  * @private
  */
 Ribbon.prototype.onContentChange_ = function(event) {
-  var url = event.item.getUrl();
+  var url = event.item.getEntry().toURL();
   this.remapCache_(event.oldUrl, url);
 
   var thumbnail = this.renderCache_[url];