SF: Fix incompatible proto definitions between pi and master branches

Proto field buffer_transform with id 37 does not exist in Pi. This conflicts with curr_frame
introduced in Pi with id 37 and Master with id 38. Since its too late to fix in Pi, lets
fix this in Master.

This will break previously generated traces in Master but will make Pi and Master proto
definitions compatible going forward.

Test: Build Winscope with new proto definitions. Open traces from Pi and Master builds

Change-Id: I208295d417ec9dc7739ad7991841b55c18a3c938