Revert 4001 "Revert 3977"

> Revert 3977
> BUG=webrtc:1749
> 
> > Update protoc.gypi to match Chromium's latest.
> > 
> > This is in preparation for enabling protobufs in Chromium. Requires
> > syncing tools/protoc_wrapper.
> > 
> > BUG=webrtc:830
> > R=kjellander@webrtc.org
> > 
> > Review URL: https://webrtc-codereview.appspot.com/1426004
> 
> TBR=andrew@webrtc.org
> Review URL: https://webrtc-codereview.appspot.com/1453005

TBR=tnakamura@webrtc.org

Review URL: https://webrtc-codereview.appspot.com/1515004

git-svn-id: http://webrtc.googlecode.com/svn/trunk@4070 4adac7df-926f-26a2-2b94-8c16560cd09d
2 files changed