Bug 811206 - Fix JSHolder drop handling, part 3 (fixes). r=mccr8, r=khuey, a=tef+
Bug 811206 - Fix JSHolder drop handling, part 2 (assert). r=mccr8, a=tef+
Bug 848644 - Do not flush when determining if a node is preformatted or not; r=bzbarsky, a=tef+