DevTools: console evaluation should work when window.console is overriden.

BUG=349993
R=yurys@chromium.org

Review URL: https://codereview.chromium.org/189723004

git-svn-id: svn://svn.chromium.org/blink/trunk@168723 bbb929c8-8fbe-4397-9dbb-9b2b20218538