file manager: fix justification of label in tile view

BUG=chromium-os:15717
TEST=manual testing on chromeos-chrome in linux

Review URL: http://codereview.chromium.org/6987031

git-svn-id: svn://svn.chromium.org/chrome/trunk/src@86716 0039d316-1c4b-4281-b951-d872f2087c98

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

@@ -345,7 +345,7 @@ button.thumbnail-view > img {
   white-space: nowrap;
 }
 
-.filename-label {
+.dialog-footer .filename-label {
   -webkit-box-orient: horizontal;
   color: #666;
   display: -webkit-box;