chromeos-chrome: Add USE flag to enable DCHECKs in Chrome

Add the "chrome_dcheck" USE flag to provide the ability to set the
"dcheck_always_on=true" build argument. This is necessary to spin
up CrOS builders to test Chrome DCHECKs on CrOS. See
go/chrome-dcheck-on-cros for more information.

BUG=b:174866377
TEST=cros_sdk --chrome_root=${PATH_TO_CHROMIUM_SRC} --goma_dir=~/depot_tools/.cipd_bin
cros_workon --board ${BOARD} start chromeos-chrome chrome-icu
export USE="chrome_internal chrome_dcheck goma" && emerge-${BOARD} chromeos-chrome

Change-Id: I52d7c249a24a63f5f5eb158417bc4ce48f313eb5
Reviewed-on: https://chromium-review.googlesource.com/c/chromiumos/overlays/chromiumos-overlay/+/2583494
Tested-by: Mike Wiitala <mwiitala@google.com>
Auto-Submit: Mike Wiitala <mwiitala@google.com>
Commit-Queue: Mike Wiitala <mwiitala@google.com>
Reviewed-by: Benjamin Gordon <bmgordon@chromium.org>
Reviewed-by: Ben Pastene <bpastene@chromium.org>
Reviewed-by: LaMont Jones <lamontjones@chromium.org>
1 file changed