Revert 244019 "Set the svn:ignore property on chrome/third_party..."

> Set the svn:ignore property on chrome/third_party/chromevox.
> 
> BUG=330461
> 
> 




git-svn-id: svn://svn.chromium.org/chrome/trunk/src@245328 0039d316-1c4b-4281-b951-d872f2087c98
SVN changes up to revision 245328