[DevTools] Report error in debug mode from promise with stack

R=vsevik@chromium.org

Review URL: https://codereview.chromium.org/645513004

git-svn-id: svn://svn.chromium.org/blink/trunk@184282 bbb929c8-8fbe-4397-9dbb-9b2b20218538
Paint Profiler: fix selection size & hieght in paint log window

BUG=426095

Review URL: https://codereview.chromium.org/645403004

git-svn-id: svn://svn.chromium.org/blink/trunk@184286 bbb929c8-8fbe-4397-9dbb-9b2b20218538