Bug 936312: Adjust tests' assumptions about B2G's WebGL support.
Bug 936169: Don't ignore failure to sandbox a non-preallocated child.
WORK IN PROGRESS: make KillHard less broken
Revert "WORK IN PROGRESS: make KillHard less broken"

This reverts commit 9c9c474cdcacf2c82c52698049996a01dae2be3f.
Bug 936278: Pass through mach mochitest-remote options correctly.
Bug 936272: Avoid calling mkdir() from content process in form mochitests.
Bug 941340: avoid forbidden content-process mkdir in marionette listener.