Convert editing/execCommand/4916402.html to use w3c test harness
This patch converts "editing/execCommand/4916402.html" to use w3c
test harness to simplify test file and renames to descriptive name
"insert_list_ul_li_to_ol.html" to provide hint what this test does.
This patch is a preparation of getting rid of grammar checking feature.
BUG=
619452
TEST=n/a; this patch changes a test file
Committed:
https://crrev.com/413d890d48174b78822e408f1b782dcb205a80c7
Cr-Commit-Position: refs/heads/master@{#407407}