[rac] Add AddressData structure.

This patch adds the AddressData structure to libaddressinput. Chrome will
pass this data structure to libaddressinput for validation.

BUG=327046

Review URL: https://codereview.chromium.org/102273005

git-svn-id: svn://svn.chromium.org/chrome/trunk/src@239826 0039d316-1c4b-4281-b951-d872f2087c98
SVN changes up to revision 239826