Convert editing/selection/table-caret-1.html to use w3c test harness
This patch converts "editing/selection/table-caret-1.html" to use w3c test
harness to simplify test files.
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/31e862cf653173e6cefe10a6ba8200f632b787f0
Cr-Commit-Position: refs/heads/master@{#408072}