Dump some bubble data to dumpsys

Flag: NONE added dump logs
Bug: 350753857
Test: manual
       - adb shell dumpsys activity service com.android.quickstep
Change-Id: I19d328f99e5ba887aa508ea9ab16e9778f13698b

quickstep/src/com/android/launcher3/taskbar/bubbles/BubbleControllers.java

@@ -18,6 +18,8 @@ package com.android.launcher3.taskbar.bubbles;
 import com.android.launcher3.taskbar.TaskbarControllers;
 import com.android.launcher3.util.RunnableList;
 
+import java.io.PrintWriter;
+
 /**
  * Hosts various bubble controllers to facilitate passing between one another.
  */
@@ -94,4 +96,9 @@ public class BubbleControllers {
         bubbleStashedHandleViewController.onDestroy();
         bubbleBarController.onDestroy();
     }
+
+    /** Dumps bubble controllers state. */
+    public void dump(PrintWriter pw) {
+        bubbleBarViewController.dump(pw);
+    }
 }