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These tests are either flaky or have non-trivial dependency on the text
dump produced by js-test.js, and hence, blocking the text dump rebaseline
in crrev.com/c/1247196.

So this CL converts them first with testharness to ease the rebaseline.

Bug: 887148
Cq-Include-Trybots: luci.chromium.try:linux_layout_tests_layout_ng
Change-Id: Ic0a29e830fa5401e8636b9903a90b2e2fb9821eb
Reviewed-on: https://chromium-review.googlesource.com/1249801
Commit-Queue: Kent Tamura <tkent@chromium.org>
Reviewed-by: Kent Tamura <tkent@chromium.org>
Cr-Commit-Position: refs/heads/master@{#595361}