Bug 783914 - WEBGL_depth_texture doesn't work using ANGLE - r=jgilbert
Bug 921342 - fix compiler warning about not enough args to macro ENSURE_NOT_CHILD_PROCESS_. r=bsmedberg
Backed out changeset 0b568f6afca0 (bug 922007)
Bug 921716 - Don't paint column rules when element is visibility:hidden. r=sjohnson