Disable Linux stack traces on CFI builds Bug: 971977 Change-Id: I2a872bd814e9a356baa3d304e1c352b6a619583e Reviewed-on: https://chromium-review.googlesource.com/c/angle/angle/+/1649300 Reviewed-by: Jamie Madill <jmadill@chromium.org> Commit-Queue: Shahbaz Youssefi <syoussefi@chromium.org>