Updated WebRTC version to 3.46
Updated WebRTC version to 3.46

TBR=wu@webrtc.org

Review URL: https://webrtc-codereview.appspot.com/3539004

git-svn-id: 917f5d3ca488f358c4d40eaec14422cf392ccec9@5093 4adac7df-926f-26a2-2b94-8c16560cd09d

mwgoldsmith/ilbc,mwgoldsmith/libilbc,ShiftMediaProject/libilbc,TimothyGu/libilbc,TimothyGu/libilbc,ShiftMediaProject/libilbc,TimothyGu/libilbc,mwgoldsmith/libilbc,mwgoldsmith/ilbc,mwgoldsmith/libilbc,ShiftMediaProject/libilbc,TimothyGu/libilbc,TimothyGu/libilbc,mwgoldsmith/ilbc,mwgoldsmith/libilbc,mwgoldsmith/ilbc,ShiftMediaProject/libilbc,ShiftMediaProject/libilbc