Add missing gyp changes for gRPC 1.0/protobuf 3.0
Add missing gyp changes for gRPC 1.0/protobuf 3.0

(Only the protobuf portion kept in the cherry pick)

webscale-networks/mod_pagespeed,webscale-networks/mod_pagespeed,webscale-networks/mod_pagespeed,webscale-networks/mod_pagespeed,webscale-networks/mod_pagespeed,webscale-networks/mod_pagespeed,webscale-networks/mod_pagespeed,webscale-networks/mod_pagespeed