Bug 881997 - Use confvars to establish webgl conformance for different products. - r=bjacob,ted
Bug 881997 - Test to assure that conformance is only exposed on our conformant products. - r=dzbarsky
Bug 889953 - Add a bounds property to ColorLayer to restrict the drawing region instead of using a clip. This stops our accelerated layer backends from requiring a temporary surface to render transformed ColorLayers. r=roc