RestrictedLockUtils was split into ...Internal

This means that in some cases RestrictedLockUtils has to be used and in
some RestrictedLockUtilsInternal.

This causes a lot of trivial code changes.

I also updated the ordering of the imports in all affected files.

Bug: 110953302
Test: Built
Change-Id: I0976c2f3c97c676084842af2198b4457db6e849a
3 files changed