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

chrome/browser/resources/file_manager/foreground/js/photo/mosaic_mode.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';
 
 /**
  * @param {Element} container Content container.
  * @param {cr.ui.ArrayDataModel} dataModel Data model.
  * @param {cr.ui.ListSelectionModel} selectionModel Selection model.
@@ skipping 291 matching lines @@
 };
 
 /**
  * Initializes a single tile.
  *
  * @param {Mosaic.Tile} tile Tile.
  * @param {function()} callback Completion callback.
  * @private
  */
 Mosaic.prototype.initTile_ = function(tile, callback) {
-  var url = tile.getItem().getUrl();
   var onImageMeasured = callback;
-  this.metadataCache_.get(url, Gallery.METADATA_TYPE,
+  this.metadataCache_.get(tile.getItem().getEntry(), Gallery.METADATA_TYPE,
       function(metadata) {
         tile.init(metadata, onImageMeasured);
       });
 };
 
 /**
  * Reload all tiles.
  */
 Mosaic.prototype.reload = function() {
   this.layoutModel_.reset_();
@@ skipping 1446 matching lines @@
  * @param {function()} onImageMeasured Image measured callback.
  */
 Mosaic.Tile.prototype.init = function(metadata, onImageMeasured) {
   this.markUnloaded();
   this.left_ = null;  // Mark as not laid out.
 
   // Set higher priority for the selected elements to load them first.
   var priority = this.getAttribute('selected') ? 2 : 3;
 
   // Use embedded thumbnails on Drive, since they have higher resolution.
-  var hidpiEmbedded = FileType.isOnDrive(this.getItem().getUrl());
+  var hidpiEmbedded = FileType.isOnDrive(this.getItem().getEntry());
   this.thumbnailLoader_ = new ThumbnailLoader(
-      this.getItem().getUrl(),
+      this.getItem().getEntry().toURL(),
       ThumbnailLoader.LoaderType.CANVAS,
       metadata,
       undefined,  // Media type.
       hidpiEmbedded ? ThumbnailLoader.UseEmbedded.USE_EMBEDDED :
                       ThumbnailLoader.UseEmbedded.NO_EMBEDDED,
       priority);
 
   // If no hidpi embedded thumbnail available, then use the low resolution
   // for preloading.
   if (!hidpiEmbedded) {
     this.thumbnailPreloader_ = new ThumbnailLoader(
-        this.getItem().getUrl(),
+        this.getItem().getEntry().toURL(),
         ThumbnailLoader.LoaderType.CANVAS,
         metadata,
         undefined,  // Media type.
         ThumbnailLoader.UseEmbedded.USE_EMBEDDED,
         2);  // Preloaders have always higher priotity, so the preload images
              // are loaded as soon as possible.
   }
 
   var setDimensions = function(width, height) {
     if (width > height) {
@@ skipping 198 matching lines @@
   return new Rect(this.left_ - this.container_.scrollLeft, this.top_,
       this.width_, this.height_).inflate(-margin, -margin);
 };
 
 /**
  * @return {number} X coordinate of the tile center.
  */
 Mosaic.Tile.prototype.getCenterX = function() {
   return this.left_ + Math.round(this.width_ / 2);
 };