GitLab

This moves the file local query functions that were implementing an
ad-hoc "package protection" style API into the PartitionPage public API.

After this, I think the functions are finally organized enough that
these classes can start being detangled into separate files.

See related bug for more details on methodology.

Bug: 787153
Change-Id: I4997fd73e1779c9ed4f9ded9aa8a4c94c0eb7d1e
Reviewed-on: https://chromium-review.googlesource.com/792090
Commit-Queue: Albert J. Wong <ajwong@chromium.org>
Reviewed-by: Chris Palmer <palmer@chromium.org>
Reviewed-by: Kentaro Hara <haraken@chromium.org>
Cr-Commit-Position: refs/heads/master@{#521788}