Bug 957709 - Keep DOMCameraPreview alive. r=dhylands, a=1.3+
Bug 964261 - Declare a widget to events created by TabParent::InjectTouchEvent. r=kats, a=1.3+
Bug 967449 - Enlarge the opposite axis's displayport when an axis's scrollable rect <= composition bounds rect. r=kats, a=1.3+
Bug 967967 - Record that children of Nuwa start with full privileges. r=khuey, a=1.3+

Otherwise, the fix for bug 921817 assumes that they've already dropped
permissions and enables system call sandboxing too early.