Convert editing/inserting/typing-00[1-3].html to use w3c test harness
This patch converts "editing/inserting/typing-00[1-3].html" to use w3c
test harness and consolidates into "typing.html" to simplify test case
for ease of maintenance.
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/52e039ba69a827512936f7a9146578560778e519
Cr-Commit-Position: refs/heads/master@{#407732}