Add presubmit check for header inclusion violation.

Add presubmit check for header inclusion violation.

This warns about include directives of inline headers within normal
header files. Note that this warning should not close the tree or
prevent the CQ from landing the patch.

R=jkummerow@chromium.org

Review URL: https://codereview.chromium.org/1293273005

Cr-Commit-Position: refs/heads/master@{#30228}