After the migration from serc/webrtc to src/ this entry in the
include_dirs list is not needed anymore.
Bug: chromium:611808
Change-Id: I17c87509b73b8a44f758d59ada28d366da664649
Reviewed-on: https://webrtc-review.googlesource.com/1920
Reviewed-by: Henrik Kjellander <kjellander@webrtc.org>
Commit-Queue: Mirko Bonadei <mbonadei@webrtc.org>
Cr-Commit-Position: refs/heads/master@{#19894}