Update platform from Jetpack.

Included changes:
* b2c0825: Unhide builders for AppSearch objects to facilitate testing.
* dde789a: Expose Builders for SearchResult and MatchInfo.

Bug: 180143983
Bug: 177954902
Test: Presubmit

Change-Id: I3307cb5fd52b99bcbd72216bb4afbc7b58dd8650
11 files changed