Update, optimize baselines after flipping Win XP to Apache for webkit tests.

Also update TestExpectations.

TBR=eseidel@chromium.org
BUG=30536

Review URL: https://codereview.chromium.org/383383002

git-svn-id: svn://svn.chromium.org/blink/trunk@178004 bbb929c8-8fbe-4397-9dbb-9b2b20218538