[SP] Rebaseline some background bleed tests
[SP] Rebaseline some background bleed tests

To capture current regressions as a baseline for related work.

BUG=450136
TBR=chrishtr@chromium.org
NOTRY=true

Review URL: https://codereview.chromium.org/1083033004

git-svn-id: bf5cd6ccde378db821296732a091cfbcf5285fbd@193710 bbb929c8-8fbe-4397-9dbb-9b2b20218538

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