Include a parent directory link in the file list for file:///somepath
Also, order files/directories lexicographically.

TEST=on linux, type file:///usr/ in the address bar and make sure the contents
are sorted and include an entry for '..', which is [parent directory].
On windows, type file:///C:/Users/ .


BUG=12621, 12812



git-svn-id: svn://svn.chromium.org/chrome/trunk/src@17933 0039d316-1c4b-4281-b951-d872f2087c98
8 files changed