Moved the build target into a section in the gyp file that is conditional on 'include_test==1', as well as on 'enable_protobuf==1'.
Original review: https://codereview.webrtc.org/1297653002/
Reverted in be4959535a39262e1508cc4223b78b8db677cb94
BUG=webrtc:4741
TBR=kjellander@webrtc.org,stefan@webrtc.org,henrik.lundin@webrtc.org
Review URL: https://codereview.webrtc.org/1353083003 .
Cr-Commit-Position: refs/heads/master@{#9990}