Remove stringstreams from pc/
Remove stringstreams from pc/

Bug: webrtc:8982
Change-Id: I85ae004e50da2c84b3cb018c6111d8c9db69fbec
Reviewed-on: https://webrtc-review.googlesource.com/82165
Reviewed-by: Tommi <74a97831ec830b6e3846c6faa50560947ae01c68@webrtc.org>
Commit-Queue: Jonas Olsson <7906496040a7ac5328c0e08cb0fb50d1a12c27fd@webrtc.org>
Cr-Commit-Position: 972c6d2dc6dd5efdad1377c0d224e03eb8f276f7@{#23560}
TimothyGu/libilbc,TimothyGu/libilbc,ShiftMediaProject/libilbc,ShiftMediaProject/libilbc,TimothyGu/libilbc,ShiftMediaProject/libilbc,TimothyGu/libilbc,ShiftMediaProject/libilbc,ShiftMediaProject/libilbc,TimothyGu/libilbc