Modify references to Origin in LockManager to use BucketId instead

As the first part of the implementation of partitioned WebLocks,
modified RenderProcessHostImpl::CreateLockManager() to convert the
Origin passed in to a BucketId before calling
LockManager::BindReceiver() and changed all references to Origin in
LockManager to use BucketId instead.

Bug: 1258860
Change-Id: I75bd3d74ed5d7bbcf63a8c8c643927b9431b8580
Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/3270364
Reviewed-by: Ben Kelly <wanderview@chromium.org>
Reviewed-by: Arthur Sonzogni <arthursonzogni@chromium.org>
Commit-Queue: Joshua Hood <jdh@chromium.org>
Cr-Commit-Position: refs/heads/main@{#951672}