Reason for revert: Relanding with compile warning fixed. Original issue's description: > Revert of Adding the ability to change ICE servers through SetConfiguration. (patchset #7 id:120001 of https://codereview.webrtc.org/1391013007/ ) > > Reason for revert: > Caused compiler warning, breaking Chrome FYI bots. > > Original issue's description: > > Adding the ability to change ICE servers through SetConfiguration. > > > > Added a SetIceServers method to PortAllocator. Also added a new > > PeerConnection Initialize method that takes a PortAllocator, in the > > hope that we can get rid of PortAllocatorFactoryInterface, since the > > only substantial thing a factory does is convert the webrtc:: ICE > > servers to cricket:: versions. > > > > Committed: https://crrev.com/d3b26d94399ff539db375a9b84010ee75479d4cf > > Cr-Commit-Position: refs/heads/master@{#10420} > > TBR=pthatcher@webrtc.org > NOPRESUBMIT=true > NOTREECHECKS=true > NOTRY=true > > Committed: https://crrev.com/18a944bf0ac9eed872dc009bd58e6bc12c946303 > Cr-Commit-Position: refs/heads/master@{#10421} TBR=pthatcher@webrtc.org NOPRESUBMIT=true NOTREECHECKS=true NOTRY=true Review URL: https://codereview.webrtc.org/1414313003 Cr-Commit-Position: refs/heads/master@{#10609}