DevTools: [Console] fix console message stack wrapping

The patch changes console message stack layout so that it wraps around
link entry.

BUG=404458
R=pfeldman

Review URL: https://codereview.chromium.org/486723003

git-svn-id: svn://svn.chromium.org/blink/trunk@180833 bbb929c8-8fbe-4397-9dbb-9b2b20218538