Add frankf and craigdh to android OWNERS

This fleshes out the reviewer list as I will no longer be
a primary reviewer.

Changes which could reduce android cq throughput, or which modify the
steps run by stable bots (add, removal, rename) should still go to
an infra contact in case it negatively affects the tree.

R=cmp@chromium.org

Review URL: https://codereview.chromium.org/111983004

git-svn-id: svn://svn.chromium.org/chrome/trunk/src@240133 0039d316-1c4b-4281-b951-d872f2087c98
SVN changes up to revision 240133
net: add (*.)(go|login|my|payroll|in|api).xero.com to HSTS preloaded.

git-svn-id: svn://svn.chromium.org/chrome/trunk/src@240134 0039d316-1c4b-4281-b951-d872f2087c98
SVN changes up to revision 240134