* Due to the type changes, I'm going to update the OnCompleted event in two phases to sync with Chrome. This is the first phase. * Reports are now managed in a set, not a map, since it's enough to store the id in one place. * Report ids are now const. * Copying of data has been greatly reduced. * This change includes preparation work for making GetStats fully async. R=xians@webrtc.org Review URL: https://webrtc-codereview.appspot.com/18819004 git-svn-id: http://webrtc.googlecode.com/svn/trunk@6745 4adac7df-926f-26a2-2b94-8c16560cd09d