Convert editing/style/style-3681552-fix-001.html to use w3c test harness
This patch converts "editing/style/style-3681552-fix-001.html" to use w3c test
harness and integrates into "typing_style.html", since both test cases are
very similar, to simplify test script for improving readability.
BUG=n/a
TEST=n/a; no behavior changes
Committed:
https://crrev.com/572ae906869f10f5d8bc7e58e6c37ee9eb6329e3
Cr-Commit-Position: refs/heads/master@{#412469}