Metrics controller for all streams
Created by: nicosang
Hi,
the aim of this PR is to manage properly metricsReportingController. Before thoses changes, the call to resetAndInitializePlayback set metricsReportingController to null, without doing any unregister events call. So, I suggest that a call to a reset function on metricsReportingController in reset function of MediaPlayer should be made. This reset function has to unregister events. After this step, metricsReportingController could be set to null.
Nicolas