Add getter for mockability

* See ag/22347415

Bug: 275267738
Change-Id: I22f57037d531d78166fa7bcbc01ff341c46885ca

packages/SystemUI/shared/src/com/android/systemui/shared/recents/model/Task.java

@@ -133,6 +133,10 @@ public class Task {
             return this.baseIntent.getPackage();
         }
 
+        public int getId() {
+            return id;
+        }
+
         @Override
         public boolean equals(Object o) {
             if (!(o instanceof TaskKey)) {
@@ -307,6 +311,10 @@ public class Task {
         lastSnapshotData.set(rawTask.lastSnapshotData);
     }
 
+    public TaskKey getKey() {
+        return key;
+    }
+
     /**
      * Returns the visible width to height ratio. Returns 0f if snapshot data is not available.
      */