Starting from [1] the toolchain has started to enforce -Wunreachable-code on Linux, this CL fixes the issues that are preventing the Chromium roll into WebRTC. Error example at [2]. [1] - https://chromium-review.googlesource.com/c/chromium/src/+/2093537 [2] - https://ci.chromium.org/p/webrtc/builders/try/linux_rel/34282? Bug: webrtc:11448 Change-Id: I96e8901ae80c44d69143ed8d972e250b6b926a7d Reviewed-on: https://webrtc-review.googlesource.com/c/src/+/171500 Reviewed-by: Karl Wiberg <kwiberg@webrtc.org> Commit-Queue: Mirko Bonadei <mbonadei@webrtc.org> Cr-Commit-Position: refs/heads/master@{#30858}