New console.assert implementation is faster then custom user implementation.

BUG=chromium:663845
R=dgozman@chromium.org

Committed: https://crrev.com/f658e41d864267fb9e99ea76faa7758b0b63d5c9
Review-Url: https://codereview.chromium.org/2505493002
Cr-Original-Commit-Position: refs/heads/master@{#41227}
Cr-Commit-Position: refs/heads/master@{#41232}