Re-enable storage for Suborigins.
Suborigins should, according to the spec, have access to their own
storage partitions. This CL re-enables the storage objects for
suborigins. Additionally, it implements the Cookies Tree Model updates
to make sure that the storage partitions appear under their parent
host's storage object.
BUG=
608564,
336894
Committed:
https://crrev.com/142972d9a3a304b276727f5167a06920587bf582
Cr-Commit-Position: refs/heads/master@{#423446}