Revert "Rebaseline layout tests after squashing is enabled."

This reverts r171946 (commit 249480dd6c5fe0b22d4e98c2f54f5935663e313c)
as the change it depends on is being reverted.

TBR=vollick@chromium.org
BUG=364860

Review URL: https://codereview.chromium.org/243083004

git-svn-id: svn://svn.chromium.org/blink/trunk@171953 bbb929c8-8fbe-4397-9dbb-9b2b20218538