Fix mixed end-of-line code in windowless_plugin_paint_test.html.

It contains LF-lines and CRLF-lines. This CL removes CR characters.

BUG=noen
TBR=keishi@chromium.org

Review URL: https://codereview.chromium.org/66243002

git-svn-id: svn://svn.chromium.org/blink/trunk@161585 bbb929c8-8fbe-4397-9dbb-9b2b20218538
Auto-rebaseline for r161583

http://src.chromium.org/viewvc/blink?view=revision&revision=161583

BUG=316460
TBR=pdr@chromium.org

Review URL: https://codereview.chromium.org/66283002

git-svn-id: svn://svn.chromium.org/blink/trunk@161586 bbb929c8-8fbe-4397-9dbb-9b2b20218538