Trace/Replay: Always use Linux-style line endings. This makes the traces consistent no matter which platform they are captured on. Will make it easier to use hashing with our code generator script. Bug: angleproject:4590 Change-Id: I7134b824c5cfefe4f2c21d8f9e21d80c2e8af57b Reviewed-on: https://chromium-review.googlesource.com/c/angle/angle/+/2188953 Commit-Queue: Jamie Madill <jmadill@chromium.org> Reviewed-by: Cody Northrop <cnorthrop@google.com>