This symbol is needed by Chromium, failing to export it causes [1] in the Chromium / WebRTC component build. [1] - https://ci.chromium.org/p/chromium/builders/try/linux-chromeos-compile-dbg/256692 Bug: webrtc:9419 Change-Id: Ic4d950f42f0cfe1db07b60f04dd06c042542612f Reviewed-on: https://webrtc-review.googlesource.com/c/src/+/158122 Reviewed-by: Jamie Walch <jamiewalch@chromium.org> Commit-Queue: Mirko Bonadei <mbonadei@webrtc.org> Cr-Commit-Position: refs/heads/master@{#29594}