Create dummy DEPS entry for Chromium.
Create dummy DEPS entry for Chromium.

Never actually check out Chromium.
Required by autoroller to support updating chromium_revision var.

Bug: skia:10572
Change-Id: I8c88a42286f010d2702f9ff646c7bb344153d2fe
Reviewed-on: https://chromium-review.googlesource.com/c/angle/angle/+/2353730
Commit-Queue: Yuly Novikov <36f5580f63d0a3eacc17e89a61d11e2f646630d2@chromium.org>
Reviewed-by: Jamie Madill <7e492b4f1c8458024932de3ba475cbf015424c30@chromium.org>

ppy/angle,ppy/angle,ppy/angle,ppy/angle