Bug 830134. r=rstrong. a=lsblakk
Bug 848733 - Don't eliminate callee phi when inlining natives. r=bhackett, a=bajaj
Bug 810726 - Backout no longer needed assertion annotations. a=test-only
Bug 840818 - Simplify PullFrameFrom when the last frame was removed from an overflow list (avoiding an assertion). r=bzbarsky, a=bajaj
Bug 847130 - Do DestroyOverflowLines() if the last line was removed instead of always RemoveOverflowLines() and SetOverflowLines() when there's lines remaining. r=dbaron, a=bajaj