This patch also add validation tests for texture subresource tracking
for render pass. Resource usage tracking for compute is per each
dispatch() call, I will add it in next patch.
BUG=dawn:157
Change-Id: I6c4b932e317d66521fa428311e727876d0adf4ea
Reviewed-on: https://dawn-review.googlesource.com/c/dawn/+/17661
Commit-Queue: Yunchao He <yunchao.he@intel.com>
Reviewed-by: Corentin Wallez <cwallez@chromium.org>
