Bug 918288 - Modify the SetTargetAPZC API to take an array of targets for multiple touch points. r=botond
Bug 918288 - Add code to TabChild to dispatch the SetTargetAPZC notification. r=roc,botond
Bug 918288 - Ensure we set a displayport on elements that we get touch-start events for. r=botond
Bug 918288 - Add logging for some of the SetTargetAPZ codepaths. r=botond