Update framework from jetpack.

Included changes:
* d953a83b: Minor Migration update to apply API Review feedback
* b5b73db0: Expand Javadoc around Tokenization
* 45ac5ac2: Make GenericDocument.Builder reusable.
* 6d55d6d6: Logging stats for remove (2)

Bug: 187419874
Bug: 184174886
Bug: 184575874
Bug: 173532925
Test: Presubmit
Change-Id: Id6509e939e9038e5ec56bde610e4af902888b9d6