Allow empty tokens in SQLiteQueryBuilder's strict grammar enforcement
Bug: 143230980
Test: atest SQLiteQueryBuilderTest, manual
Change-Id: Ie82dded77a3eaa75095333b0e77f10e21c9f7caf
(cherry picked from commit ea5b2c08df)
Merged-In: Ie82dded77a3eaa75095333b0e77f10e21c9f7caf