Adding MSDL history to Launcher's dump information.

The history displays the latest tokens played. Useful for testing and
debugging.

Test: presubmit
Flag: NONE MSDL playback is flagged case by case.
Bug: 377496684
Change-Id: I163889ade9fe4dee7f02459d2d9d81b94197bea1
diff --git a/src/com/android/launcher3/Launcher.java b/src/com/android/launcher3/Launcher.java
index 74dd971..f61d3f0 100644
--- a/src/com/android/launcher3/Launcher.java
+++ b/src/com/android/launcher3/Launcher.java
@@ -233,6 +233,7 @@
 import com.android.launcher3.util.ItemInflater;
 import com.android.launcher3.util.KeyboardShortcutsDelegate;
 import com.android.launcher3.util.LockedUserState;
+import com.android.launcher3.util.MSDLPlayerWrapper;
 import com.android.launcher3.util.PackageUserKey;
 import com.android.launcher3.util.PendingRequestArgs;
 import com.android.launcher3.util.PluginManagerWrapper;
@@ -2745,6 +2746,7 @@
         mModel.dumpState(prefix, fd, writer, args);
         mOverlayManager.dump(prefix, writer);
         ACTIVITY_TRACKER.dump(prefix, writer);
+        MSDLPlayerWrapper.INSTANCE.get(getApplicationContext()).dump(prefix, writer);
     }
 
     /**