This bug was filed from the Socorro interface and is report bp-3d42bfd8-30c1-47a9-ba3d-4561e2160330. ============================================================= No specific steps I'm afraid. This hit me out of the blue while sitting idly in Gmail. Suddenly the browser window disappeared, and Crash Reporter came up.
I think this was probably the same issue as bug 1260198. Please re-open if this recurs.