chrome-binary-tests: Add the C++ fake_dmserver binary to the build

Add the new C++ fake_dmserver binary to the ChromeOS build.
The new executable binary will be in "/usr/libexec/chrome-binary-tests".
It will be used by Tast tests instead of the old python fake server.

BUG=b:215330111
TEST=emerge-$BOARD chrome-binary-tests

Change-Id: I53b8fba517aa726f5c40ed07cbda36e29415b7d9
Reviewed-on: https://chromium-review.googlesource.com/c/chromiumos/overlays/chromiumos-overlay/+/3817044
Reviewed-by: Sergiy Belozorov <sergiyb@chromium.org>
Reviewed-by: Mike Frysinger <vapier@chromium.org>
Tested-by: Mohamed Omar <mohamedaomar@google.com>
Reviewed-by: Victor-Gabriel Savu <vsavu@google.com>
2 files changed