LogToSderr by default in WebRTC tests
LogToSderr by default in WebRTC tests

Printing logs to stderr helps debugging and investigating CQ failures.

Bug: webrtc:5996
Change-Id: I365ee0a0b3ff3d999f1a9a293d3c05bd75e5b999
Reviewed-on: https://webrtc-review.googlesource.com/c/src/+/138187
Reviewed-by: Oleh Prypin <5baa3e04f9bd6ba7a2a4b56625a3c84f19237cdb@webrtc.org>
Reviewed-by: Mirko Bonadei <d2c43c210eae6feef04f53bae50885e8152edcca@webrtc.org>
Reviewed-by: Niels Moller <0057859e47d61d90529d0f66d9ef692cefedb46a@webrtc.org>
Commit-Queue: Anton Sukhanov <20de4e819f6c8cd20c51bf8af5b559e4a7c96828@webrtc.org>
Cr-Commit-Position: 972c6d2dc6dd5efdad1377c0d224e03eb8f276f7@{#28065}

TimothyGu/libilbc,ShiftMediaProject/libilbc,ShiftMediaProject/libilbc,ShiftMediaProject/libilbc,ShiftMediaProject/libilbc,TimothyGu/libilbc,TimothyGu/libilbc,ShiftMediaProject/libilbc,TimothyGu/libilbc,TimothyGu/libilbc