Enable rar, tar, tar.gz and tar.bz2 archive support in CrOS file manager.

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

Index: chrome/browser/resources/file_manager/js/mock_chrome.js
===================================================================
--- chrome/browser/resources/file_manager/js/mock_chrome.js	(revision 123193)
+++ chrome/browser/resources/file_manager/js/mock_chrome.js	(working copy)
@@ -105,7 +105,7 @@
       },
       { taskId: extensionId + '|mount-archive',
         title: 'Mount',
-        regexp: /\.(zip)$/i,
+        regexp: /\.(rar|tar|tar.bz2|tar.gz|tbz|tbz2|tgz|zip)$/i,
         iconUrl: 'data:image/png;base64,iVBORw0KGgoAAAANSUhEUgAAABAAAAAOCAYAAAAmL5yKAAAAAXNSR0IArs4c6QAAAAZiS0dEAP8A/wD/oL2nkwAAAAlwSFlzAAALEwAACxMBAJqcGAAAAAd0SU1FB9sEEBcOAw9XftIAAADFSURBVCjPrZKxCsIwEIa/FHFwsvYxROjSQXAoqLiIL+xgBtvZ91A6uOnQc2hT0zRqkR4c3P25+/PfJTCwLU6wEpgBWkDXuInDPSwF5r7mJIeNQFTnIiCeONpVdYlLoK9wEUhNg8+B9FDVaZcgCKAovjTXfvPJFwGZtKW60pt8bOGBzfLouemnFY/MAs8wDeEI4NzaybewBu4AysKVgrK0gfe5iB9vjdAUqQ/S1Y/R3IX9Zc1zxc7zxe2/0Iskt7AsG0hhx14W8XV43FgV4gAAAABJRU5ErkJggg=='
       },
       {
@@ -236,8 +236,7 @@
 
       PLAY_MEDIA: 'Play',
 
-      MOUNT_ARCHIVE: 'Open archive',
-      UNMOUNT_ARCHIVE: 'Close archive',
+      MOUNT_ARCHIVE: 'Open',
       FORMAT_DEVICE: 'Format device',
 
       GALLERY: 'View and Edit',
@@ -352,6 +351,10 @@
       AUDIO_FILE_TYPE: '$1 audio file',
       HTML_DOCUMENT_FILE_TYPE: 'HTML document',
       ZIP_ARCHIVE_FILE_TYPE: 'Zip archive',
+      RAR_ARCHIVE_FILE_TYPE: 'RAR archive',
+      TAR_ARCHIVE_FILE_TYPE: 'Tar archive',
+      TAR_BZIP2_ARCHIVE_FILE_TYPE: 'Bzip2 compressed tar archive',
+      TAR_GZIP_ARCHIVE_FILE_TYPE: 'Gzip compressed tar archive',
       PLAIN_TEXT_FILE_TYPE: 'Plain text file',
       PDF_DOCUMENT_FILE_TYPE: 'PDF document'
     });