[LayoutNG] flag-specific rebaseline for text failures

This patch matches to the changes in the base expectations
when flag-specific rebaselines were needed for space-only
differences.

TBR=eae@chromium.org, xiaochengh@chromium.org
NOTRY=true

Bug: 591099
Cq-Include-Trybots: luci.chromium.try:linux_layout_tests_layout_ng
Change-Id: Ie93864457ba5ac3ff2d73fdc1783623a53b967e3
Reviewed-on: https://chromium-review.googlesource.com/1179735
Commit-Queue: Koji Ishii <kojii@chromium.org>
Reviewed-by: Koji Ishii <kojii@chromium.org>
Cr-Commit-Position: refs/heads/master@{#584075}
5 files changed