Add some shared utility methods to the utils project.

BUG=angle:730

Change-Id: I268c7f76ee9a14ab82f646ae8ebf4eed100bf86d
Reviewed-on: https://chromium-review.googlesource.com/213509
Reviewed-by: Brandon Jones <bajones@chromium.org>
Tested-by: Jamie Madill <jmadill@chromium.org>
Reviewed-by: Geoff Lang <geofflang@chromium.org>
10 files changed