Add PRESUBMIT check for blink's mojom namespace rule in Blink

This CL adds PRESUMBIT check for blink's mojom namespaces rule.
When mojom interfaces of Blink are using in Blink, we should use
blink::mojom::blink::T or mojom::blink::T in Blink.

Bug: 1043557
Change-Id: I7009c6fbe04a7b937889d97ca69ec92d505b6941
Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/2010448
Reviewed-by: Kentaro Hara <[email protected]>
Commit-Queue: Miyoung Shin <[email protected]>
Cr-Commit-Position: refs/heads/master@{#733293}
1 file changed