GitLab

These numbers are: NaN, Infinity, -Infinity, -0.

R=pfeldman
TEST=various existing tests

Review URL: https://codereview.chromium.org/200423008

git-svn-id: svn://svn.chromium.org/blink/trunk@169376 bbb929c8-8fbe-4397-9dbb-9b2b20218538