Update Framework from Jetpack.

Changes included:
* 766e021: Hook up GlobalSearchSession#removeObserver.
* e1ebc55: Port observer cts tests to existing conventions around Features.
* 6f01872: Refactor AppSearchImpl namespace and schema look up logic.
* 2c18e2c: Remove QueryProcessor and make SearchSpecToProtoConverter instanceable.

Bug: 193494000
Bug: 203736617
Bug: 197361770
Test: Presubmit
Change-Id: Ib17bc2c8b4a1ab6f6d1d05c9f67dd4563c607201
20 files changed