A text in a marquee element should not wrap

A text in a marquee element whose direction is left or right
should not wrap even if the element has a large height.

BUG=421046
TEST=marquee-should-not-wrap.html

Review URL: https://codereview.chromium.org/636143002

git-svn-id: svn://svn.chromium.org/blink/trunk@183411 bbb929c8-8fbe-4397-9dbb-9b2b20218538