kiosk: Add KioskUpdateTest.PreserveLocalData and PermissionChange.

BUG=345756,349082

Review URL: https://codereview.chromium.org/189603008

git-svn-id: svn://svn.chromium.org/chrome/trunk/src@256139 0039d316-1c4b-4281-b951-d872f2087c98
SVN changes up to revision 256139