[LayoutNG] Update FlagExpectations for LayoutNG

Following bot results are included.
1933 1934 1935 1938 1939

TBR=eae@chromium.org
NOTRY=true

Bug: 591099
Change-Id: Ibdc98e8e279f2a7b9e304c073db3f5cfc636a491
Reviewed-on: https://chromium-review.googlesource.com/742821
Reviewed-by: Koji Ishii <kojii@chromium.org>
Commit-Queue: Koji Ishii <kojii@chromium.org>
Cr-Commit-Position: refs/heads/master@{#512392}
1 file changed