Add StatsLog*Manager for logging.

Bug: 113043444

Verification: (19) is our event classifier number
11-05 11:24:28.188   932   994 I statsd  : { 1541445868000000000 766293363001 (19)0x10000->1[I] 0x20000->0[I] 0x30000->0[I] 0x40000->[S] 0x50000->1[I]  }

Change-Id: I75403837f9fa8e51efa012fb708bce7efc9c4488

quickstep/src/com/android/quickstep/views/TaskView.java

@@ -167,9 +167,12 @@ public class TaskView extends FrameLayout implements PageCallbacks {
                 return;
             }
             launchTask(true /* animate */);
+
             fromContext(context).getUserEventDispatcher().logTaskLaunchOrDismiss(
                     Touch.TAP, Direction.NONE, getRecentsView().indexOfChild(this),
                     TaskUtils.getLaunchComponentKeyForTask(getTask().key));
+            fromContext(context).getStatsLogManager().logTaskLaunch(getRecentsView(),
+                    TaskUtils.getLaunchComponentKeyForTask(getTask().key));
         });
         setOutlineProvider(new TaskOutlineProvider(getResources()));
     }