[filemanager] Content metadata moved to the cache.

chrome/browser/resources/file_manager/js/image_editor/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.
 
 /*
  * Base class that Ribbon uses to display photos.
  */
 
 function RibbonClient() {}
 
 RibbonClient.prototype.prefetchImage = function(id, url) {};
 
 RibbonClient.prototype.openImage = function(id, url, metadata, direction) {
 };
 
 RibbonClient.prototype.closeImage = function(item) {};
 
 /**
  * Image gallery for viewing and editing image files.
  *
  * @param {HTMLDivElement} container
  * @param {Object} context Object containing the following:
  *     {function(string)} onNameChange Called every time a selected
  *         item name changes (on rename and on selection change).
  *     {function} onClose
- *     {MetadataProvider} metadataProvider
+ *     {string} rootUrl
  *     {Array.<Object>} shareActions
  *     {string} readonlyDirName Directory name for readonly warning or null.
  *     {DirEntry} saveDirEntry Directory to save to.
  *     {function(string)} displayStringFunction
  */
 function Gallery(container, context) {
   this.container_ = container;
   this.document_ = container.ownerDocument;
   this.context_ = context;
+  this.context_.metadataProvider = new MetadataProvider(this.context_.rootUrl);
 
   var strf = context.displayStringFunction;
   this.displayStringFunction_ = function(id, formatArgs) {
     var args = Array.prototype.slice.call(arguments);
     args[0] = 'GALLERY_' + id.toUpperCase();
     return strf.apply(null, args);
   };
 
   this.onFadeTimeoutBound_ = this.onFadeTimeout_.bind(this);
   this.fadeTimeoutId_ = null;
@@ skipping 1254 matching lines @@
 Ribbon.Item.prototype.setThumbnail = function(metadata) {
   var url;
   var transform;
 
   var mediaType = FileType.getMediaType(this.url_);
 
   if (metadata.thumbnailURL) {
     url = metadata.thumbnailURL;
     transform = metadata.thumbnailTransform;
   } else if (mediaType == 'image' &&
-      FileType.canUseImageUrlForPreview(metadata)) {
+      FileType.canUseImageUrlForPreview(metadata.width, metadata.height, 0)) {
     url = this.url_;
     transform = metadata.imageTransform;
   } else {
     url = FileType.getPreviewArt(mediaType);
   }
 
   function percent(ratio) { return Math.round(ratio * 100) + '%' }
 
   function resizeToFill(img, aspect) {
     if ((aspect > 1)) {
@@ skipping 81 matching lines @@
 ShareMode.prototype.setUp = function() {
   ImageEditor.Mode.prototype.setUp.apply(this, arguments);
   ImageUtil.setAttribute(this.menu_, 'hidden', false);
   ImageUtil.setAttribute(this.button_, 'pressed', false);
 };
 
 ShareMode.prototype.cleanUpUI = function() {
   ImageEditor.Mode.prototype.cleanUpUI.apply(this, arguments);
   ImageUtil.setAttribute(this.menu_, 'hidden', true);
 };