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This CL converts LockHandleAssociatedPtr and
LockHandleAssociatedPtrInfo to new Mojo types.
It also updates Granted from lock_manager.mojom.

Bug: 955171, 978694
Change-Id: I02ba0cdbe52f8f04b3e4514a1f335917db368559
Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/1771365
Commit-Queue: Julie Kim <jkim@igalia.com>
Reviewed-by: Sam McNally <sammc@chromium.org>
Reviewed-by: Ken Rockot <rockot@google.com>
Reviewed-by: Victor Costan <pwnall@chromium.org>
Cr-Commit-Position: refs/heads/master@{#691596}