Key by both package and user for list of active install sessions.

This fixes the bug where items are left on the home screen for the wrong
user.

Bug: 139281702
Change-Id: I03c31bb308fc496b9fc633c2fde23ae4568f8c44
diff --git a/src/com/android/launcher3/util/PackageUserKey.java b/src/com/android/launcher3/util/PackageUserKey.java
index 8dc45f5..aa11968 100644
--- a/src/com/android/launcher3/util/PackageUserKey.java
+++ b/src/com/android/launcher3/util/PackageUserKey.java
@@ -31,7 +31,7 @@
         update(packageName, user);
     }
 
-    private void update(String packageName, UserHandle user) {
+    public void update(String packageName, UserHandle user) {
         mPackageName = packageName;
         mUser = user;
         mHashCode = Arrays.hashCode(new Object[] {packageName, user});