Fixed the border of the bottom panel of the File Manager.

BUG=None
TEST=None


Review URL: http://codereview.chromium.org/8381010

git-svn-id: svn://svn.chromium.org/chrome/trunk/src@106925 0039d316-1c4b-4281-b951-d872f2087c98

chrome/browser/resources/file_manager/css/file_manager.css

@@ -272,7 +272,6 @@ div.img-container > img {
 
 /* Bottom pane describing current selection. */
 .preview-panel {
-  -webkit-border-start: 1px #aaa solid;
   -webkit-box-orient: horizontal;
   display: -webkit-box;
   height: 61px;