[filebrowser] Fix detection of unmount-archive action.

chrome/browser/resources/file_manager/js/file_manager.js

 // Copyright (c) 2011 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.
 
 // Setting the src of an img to an empty string can crash the browser, so we
 // use an empty 1x1 gif instead.
 const EMPTY_IMAGE_URI = 'data:image/gif;base64,'
         + 'R0lGODlhAQABAPABAP///wAAACH5BAEKAAAALAAAAAABAAEAAAICRAEAOw%3D%3D';
 
 var g_slideshow_data = null;
@@ skipping 1661 matching lines @@
   };
 
   /**
    * Checks whether unmount task should be displayed and if the answer is
    * affirmative renders it.
    * @param {Object} selection Selected files object.
    */
   FileManager.prototype.maybeRenderUnmountTask_ = function(selection) {
     for (var index = 0; index < selection.urls.length; ++index) {
       // Each url should be a mount point.
-      var path = selection.urls[index];
-      if (!this.mountPoints_.hasOwnProperty(path) ||
-          this.mountPoints_[path].type != 'file')
+      var path = selection.entries[index].fullPath;
+      var found = false;
+      for (var i = 0; i < this.mountPoints_.length; i++) {
+        var mountPath = this.mountPoints_[i].mountPath;
+        if (mountPath[0] != '/') {

[rginda, 2011/08/23 21:09:03]

FYI, in http://codereview.chromium.org/7706028/ Szymon is factoring out the
normalize() function from maybeRenderFormattingTask_ into a utility method.

+          mountPath = '/' + mountPath;
+        }
+        if (mountPath == path && this.mountPoints_[i].mountType == 'file') {
+          found = true;
+          break;
+        }
+      }
+      if (!found)
         return;
     }
     this.renderTaskButton_({
         taskId: this.getExtensionId_() + '|unmount-archive',
         iconUrl:
             chrome.extension.getURL('images/icon_unmount_archive_16x16.png'),
         title: str('UNMOUNT_ARCHIVE')
     });
    };
 
@@ skipping 1452 matching lines @@
 
     if (msg) {
       console.log('no no no');
       this.alert.show(msg, onAccept);
       return false;
     }
 
     return true;
   };
 })();