Make updates gps.h to enhance the definition of GPS Measurements interface.
b/19938206

The changes have been worked out after working with two partners to implement the interface.
The need of the additional flag is required, given that each partner can only provide one type of
pseudorange rate (corrected vs uncorrected).

Change-Id: I2d3bdffe5c24f8df97b33111a6753cc7b0f2b3d9
1 file changed