Fix selecting when opening an image from the download shelf.

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

 // Copyright (c) 2012 The Chromium Authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 'use strict';
 
 /**
  * Called from the main frame when unloading.
  * @return {string?} User-visible message on null if it is OK to close.
  */
@@ skipping 256 matching lines @@
 Gallery.prototype.createToolbarButton_ = function(className, title) {
   var button = util.createChild(this.toolbar_, className, 'button');
   button.title = this.displayStringFunction_(title);
   return button;
 };
 
 /**
  * Loads the content.
  *
  * @param {Array.<Entry>} entries Array of entries.
- * @param {Array.<Entry>} selectedEntries Array of selected entries. Must be a
- *     subset of {@code entries}.
+ * @param {Array.<Entry>} selectedEntries Array of selected entries.
  */
 Gallery.prototype.load = function(entries, selectedEntries) {
   var items = [];
   for (var index = 0; index < entries.length; ++index) {
     items.push(new Gallery.Item(entries[index]));
   }
   this.dataModel_.push.apply(this.dataModel_, items);
 
   this.selectionModel_.adjustLength(this.dataModel_.length);
 
+  // Comparing Entries by reference is not safe. Therefore we have to use URLs.
+  var entryIndexesByURLs = {};
+  for (var index = 0; index < entries.length; index++) {
+    entryIndexesByURLs[entries[index].toURL()] = index;
+  }
+
   for (var i = 0; i !== selectedEntries.length; i++) {
-    var selectedIndex = entries.indexOf(selectedEntries[i]);
-    if (selectedIndex >= 0)
+    var selectedIndex = entryIndexesByURLs[selectedEntries[i].toURL()];
+    if (selectedIndex !== undefined)
       this.selectionModel_.setIndexSelected(selectedIndex, true);
     else
       console.error('Cannot select ' + selectedEntries[i]);
   }
 
   if (this.selectionModel_.selectedIndexes.length === 0)
     this.onSelection_();
 
   var mosaic = this.mosaicMode_ && this.mosaicMode_.getMosaic();
 
@@ skipping 556 matching lines @@
  */
 Gallery.prototype.updateButtons_ = function() {
   if (this.modeButton_) {
     var oppositeMode =
         this.currentMode_ === this.slideMode_ ? this.mosaicMode_ :
                                                 this.slideMode_;
     this.modeButton_.title =
         this.displayStringFunction_(oppositeMode.getTitle());
   }
 };