Merge "adb: defer acknowledgement of pushed files until the end." into rvc-dev...
Merge "adb: defer acknowledgement of pushed files until the end." into rvc-dev am: 8c6d98af am: 7bd011e6 am: d06c7ef9
Change-Id: I48bc55a281f1d8ea8a8dc679f7d772dc6b38c4db