[css-typed-om] Rename validation functions to not clash.

This patch renames some validation functions in anon namespaces to
include the class name so that they won't clash in Jumbo builds.

Bug: 545318
Change-Id: I291bef0abccedb7c937a98b6a931a3f77d959536
Reviewed-on: https://chromium-review.googlesource.com/827960
Reviewed-by: nainar <nainar@chromium.org>
Commit-Queue: Darren Shen <shend@chromium.org>
Cr-Commit-Position: refs/heads/master@{#524280}
4 files changed