Add ozone-platform switch on freon devices.

BUG=chromium:464239
TEST=Run the tests on a freon device

Change-Id: I16294eaefcdb6752c16590d7b32169979e41f336
Previous-Reviewed-on: https://chromium-review.googlesource.com/257319
(cherry picked from commit 124125fa71913ae9218c67a52aadafa83fb0b0cf)
Reviewed-on: https://chromium-review.googlesource.com/260200
Reviewed-by: Owen Lin <owenlin@chromium.org>
Commit-Queue: Owen Lin <owenlin@chromium.org>
Tested-by: Owen Lin <owenlin@chromium.org>
3 files changed