[Telemetry] Create ForwarderFactory earlier on CrOS.

BUG=
TBR=tonyg@chromium.org
NOTRY=True

Review URL: https://codereview.chromium.org/144283006

git-svn-id: svn://svn.chromium.org/chrome/trunk/src@250448 0039d316-1c4b-4281-b951-d872f2087c98
SVN changes up to revision 250448