Improve multi-user app management.

Introduce API to get per-user storage information, keep track
of services associated with users, and various small cleanup.

Change-Id: I5d4e784e7ff3cccfed627d66a090d2f464202634
diff --git a/test-runner/src/android/test/mock/MockPackageManager.java b/test-runner/src/android/test/mock/MockPackageManager.java
index a85c8b5..0fb51f0 100644
--- a/test-runner/src/android/test/mock/MockPackageManager.java
+++ b/test-runner/src/android/test/mock/MockPackageManager.java
@@ -480,7 +480,8 @@
      * @hide - to match hiding in superclass
      */
     @Override
-    public void getPackageSizeInfo(String packageName, IPackageStatsObserver observer) {
+    public void getPackageSizeInfo(String packageName, int userHandle,
+            IPackageStatsObserver observer) {
         throw new UnsupportedOperationException();
     }