Convert editing/style/style-3681552-fix-002.html to use w3c test harness
This patch converts "editing/style/style-3681552-fix-002.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/bada043222ed89a2b8cac4248e84274025c6f774
Cr-Commit-Position: refs/heads/master@{#412471}