Cast: Make castv2 mirroring performance test run again

media/cast/test/utility/standalone_cast_environment.h

Index: media/cast/test/utility/standalone_cast_environment.h
diff --git a/media/cast/test/utility/standalone_cast_environment.h b/media/cast/test/utility/standalone_cast_environment.h
index cf2674e61e7387e8696358955b9752878a1c706c..11d56f373b1ccb1b9b519b6fffc39fe88e580522 100644
--- a/media/cast/test/utility/standalone_cast_environment.h
+++ b/media/cast/test/utility/standalone_cast_environment.h
@@ -18,6 +18,7 @@ class StandaloneCastEnvironment : public CastEnvironment,
                                   public base::ThreadChecker {
  public:
   StandaloneCastEnvironment();
+  explicit StandaloneCastEnvironment(scoped_ptr<base::TickClock> clock);

[miu, 2014/04/09 19:44:35]

This concerns me, since the task runner for the threads won't respect the
passage of time of |clock|.  Suggest you either re-think this, or add a ctor
comment here to warn that the use of PostDelayedTask() will be timed w.r.t. the
default clock, not |clock|.

[hubbe, 2014/04/09 20:39:43]

The task runners do all their work in relative time (the input to PostDelayTask
is a TimeDelta) so this should just work. However, I ended up changing the
implementation while I was testing, let me know which implementation you prefer.

 
   // Stops all threads backing the task runners, blocking the caller until
   // complete.