GitLab

This CL:
- Forces on check that resource_overlay is specified if target
overrides resources for non-test targets. Disables check by default for
tests. The check is not on by default for tests because tests like
clank_junit_tests include resources with the same name but from
different dynamic feature modules
- Adds enforce_resource_overlays_in_tests flag to enable tests to enable
check.

BUG=1093825

Change-Id: Id0ac645b6f338b1f2c3a6ce75b6be35f9de6e29c
Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/2391606
Commit-Queue: Peter Kotwicz <pkotwicz@chromium.org>
Reviewed-by: Mohamed Heikal <mheikal@chromium.org>
Cr-Commit-Position: refs/heads/master@{#814281}