Implement deleteAidingData and simulate TTFF

Bug: 197671205
Test: atest GnssLocationRateChangeTest
Test: atest GnssMeasurementWhenNoLocationTest
(cherry picked from https://googleplex-android-review.googlesource.com/q/commit:ef24c7a10dff0e20048d59026013b507cf0fcbfb)
Merged-In: I9b6a196a1acc24ecb30b0706b4eceba08dad90e9
Change-Id: I9b6a196a1acc24ecb30b0706b4eceba08dad90e9
1 file changed