Correctly attribute User Activity to the uid in checkin batterystats.

Change-Id: Iacca5985c0b5a68026da6b2b5c9607f8cb71aad5
diff --git a/core/java/android/os/BatteryStats.java b/core/java/android/os/BatteryStats.java
index d0a6f08..c22c4b6 100644
--- a/core/java/android/os/BatteryStats.java
+++ b/core/java/android/os/BatteryStats.java
@@ -2076,7 +2076,7 @@
                     if (val != 0) hasData = true;
                 }
                 if (hasData) {
-                    dumpLine(pw, 0 /* uid */, category, USER_ACTIVITY_DATA, args);
+                    dumpLine(pw, uid /* uid */, category, USER_ACTIVITY_DATA, args);
                 }
             }