Bug 873730.  Make JS_SourceHook take a Handle for the JSScript.  r=till
Bug 873209.  Trace the *vp of specialized DOM getters in Ion.  r=jandem
Bug 873172: When checking whether a flex item is generated content, skip past any anonymous boxes around it. r=bz

--HG--
rename : layout/reftests/flexbox/flexbox-with-pseudo-elements-1-ref.html => layout/reftests/flexbox/flexbox-with-pseudo-elements-3-ref.html
rename : layout/reftests/flexbox/flexbox-with-pseudo-elements-1.html => layout/reftests/flexbox/flexbox-with-pseudo-elements-3.html