[WW logging] Log rankings for app launches

Bug: 158219113
Change-Id: Ib6db4e73e48ff27ca9d3a5348eea42e1f534dba1

src/com/android/launcher3/logging/InstanceIdSequence.java

@@ -44,6 +44,13 @@ public class InstanceIdSequence {
         mInstanceIdMax = min(max(1, instanceIdMax), InstanceId.INSTANCE_ID_MAX);
     }
 
+    /**
+     * Constructs a sequence with identifiers [1, InstanceId.INSTANCE_ID_MAX].
+     */
+    public InstanceIdSequence() {
+        this(InstanceId.INSTANCE_ID_MAX);
+    }
+
     /**
      * Gets the next instance from the sequence.  Safe for concurrent use.
      * @return new InstanceId