Windows 10 has support for native ANSI control codes.
This means we don't have to wrap stdout/stderr with Colorama, which uses old CMD APIs to handle these sequences.

This change inadvertently also works around an issue on Python 3 where Colorama errors when bytes are output by gclient_utils.CheckCallAndFilter due to not wrapping sys.stdout.buffer.

Bug: 942522
Change-Id: Ic7dde620b01bd94eb50de353bfc0276cad045a45
Reviewed-on: https://chromium-review.googlesource.com/c/chromium/tools/depot_tools/+/1735566
Commit-Queue: Raul Tambre <raul@tambre.ee>
Reviewed-by: Marc-Antoine Ruel <maruel@chromium.org>
Auto-Submit: Raul Tambre <raul@tambre.ee>