Bug 303896 - Turn on displaying the selection when the 'disabled' attr is removed if the element has focus.  r=ehsan
Bug 303896 - Refactor AttributeChanged() to follow code style and make it easier to read (no functional change).  r=ehsan
Bug 896429 - Signaling: dynamically create SDP config r=abr
Bug 897701: Don't entrain the target of the pan longer than necessary. r=jlebar