Rework tracing and perf defines. Changed ANGLE_DISABLE_* to ANGLE_ENABLE_* for perf and tracing defines so they are disabled by default. Updated the gyp files to only turn on perf by default for windows debug builds. Change-Id: I71706674e6d12fbf4208acc8f100d963b82c7674 Reviewed-on: https://chromium-review.googlesource.com/183250 Reviewed-by: Jamie Madill <jmadill@chromium.org> Reviewed-by: Shannon Woods <shannonwoods@chromium.org> Tested-by: Geoff Lang <geofflang@chromium.org>