Let ModelTypeService create SharedModelTypeProcessor instead
of ModelTypeController.
Only change the place where to create, still need to figure
out where to trigger.

BUG=547087

Review URL: https://codereview.chromium.org/1763953002

Cr-Commit-Position: refs/heads/master@{#383357}
16 files changed