Show removed user's data usage under its correct item

Users for which UserManager.getUserInfo returned null were shown as
unnamed users on Settings > Data Usage. This behavior has now changed
to show their data usage under the same item as UID_REMOVED.

Bug: 18174376
Change-Id: I8d172647edb51f7a277b4b714e9b7f3a0b5f3154
diff --git a/src/com/android/settings/DataUsageSummary.java b/src/com/android/settings/DataUsageSummary.java
index 732d4c8..152298c 100644
--- a/src/com/android/settings/DataUsageSummary.java
+++ b/src/com/android/settings/DataUsageSummary.java
@@ -62,6 +62,7 @@
 import android.content.Loader;
 import android.content.SharedPreferences;
 import android.content.pm.PackageManager;
+import android.content.pm.UserInfo;
 import android.content.res.Resources;
 import android.content.res.TypedArray;
 import android.graphics.Color;
@@ -141,6 +142,7 @@
 import com.android.settings.widget.ChartDataUsageView;
 import com.android.settings.widget.ChartDataUsageView.DataUsageChartListener;
 import com.android.settings.widget.ChartNetworkSeriesView;
+
 import com.google.android.collect.Lists;
 
 import libcore.util.Objects;
@@ -1679,9 +1681,16 @@
                         collapseKey = uid;
                         category = AppItem.CATEGORY_APP;
                     } else {
-                        // Add to other user item.
-                        collapseKey = UidDetailProvider.buildKeyForUser(userId);
-                        category = AppItem.CATEGORY_USER;
+                        // If it is a removed user add it to the removed users' key
+                        final UserInfo info = mUm.getUserInfo(userId);
+                        if (info == null) {
+                            collapseKey = UID_REMOVED;
+                            category = AppItem.CATEGORY_APP;
+                        } else {
+                            // Add to other user item.
+                            collapseKey = UidDetailProvider.buildKeyForUser(userId);
+                            category = AppItem.CATEGORY_USER;
+                        }
                     }
                 } else if (uid == UID_REMOVED || uid == UID_TETHERING) {
                     collapseKey = uid;