Fix trivial type-check errors in file_manager.

ui/file_manager/image_loader/image_loader_client.js

 // Copyright 2013 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';
 
 /**
  * Client used to connect to the remote ImageLoader extension. Client class runs
  * in the extension, where the client.js is included (eg. Files.app).
  * It sends remote requests using IPC to the ImageLoader class and forwards
@@ skipping 123 matching lines @@
   // Record cache usage.
   ImageLoaderClient.recordPercentage('Cache.Usage', this.cache_.getUsage());
 
   // Cancel old, invalid tasks.
   var taskKeys = Object.keys(this.tasks_);
   for (var index = 0; index < taskKeys.length; index++) {
     var taskKey = taskKeys[index];
     var task = this.tasks_[taskKey];
     if (!task.isValid()) {
       // Cancel this task since it is not valid anymore.
-      this.cancel(taskKey);
+      this.cancel(parseInt(taskKey, 10));
       delete this.tasks_[taskKey];
     }
   }
 
   // Replace the extension id.
   var sourceId = chrome.i18n.getMessage('@@extension_id');
   var targetId = ImageLoaderClient.EXTENSION_ID;
 
   url = url.replace('filesystem:chrome-extension://' + sourceId,
                     'filesystem:chrome-extension://' + targetId);
@@ skipping 181 matching lines @@
   delete this.images_[key];
 };
 
 // Helper functions.
 
 /**
  * Loads and resizes and image. Use opt_isValid to easily cancel requests
  * which are not valid anymore, which will reduce cpu consumption.
  *
  * @param {string} url Url of the requested image.
- * @param {Image} image Image node to load the requested picture into.
+ * @param {HTMLImageElement} image Image node to load the requested picture
+ *     into.
  * @param {Object} options Loader options, such as: orientation, scale,
  *     maxHeight, width, height and/or cache.
  * @param {function()} onSuccess Callback for success.
  * @param {function()} onError Callback for failure.
  * @param {function(): boolean=} opt_isValid Function returning false in case
  *     a request is not valid anymore, eg. parent node has been detached.
  * @return {?number} Remote task id or null if loaded from cache.
  */
 ImageLoaderClient.loadToImage = function(
     url, image, options, onSuccess, onError, opt_isValid) {
   var callback = function(result) {
     if (result.status == 'error') {
       onError();
       return;
     }
     image.src = result.data;
     onSuccess();
   };
 
   return ImageLoaderClient.getInstance().load(
       url, callback, options, opt_isValid);
 };