Fix NPE during unit test

As of ag/3932176 the slice indexer now queries getSummary() for each
controller. So we need to create all necessary objects before
getSummary(). In this case, the PSCD object.

Change-Id: I0162996be37d740f1e450880bf4698acd94ca0ad
Fixes: 78897071
Test: atest

src/com/android/settings/backup/PrivacySettingsConfigData.java

@@ -19,6 +19,9 @@ package com.android.settings.backup;
 import android.content.Intent;
 
 public class PrivacySettingsConfigData {
+
+    private static PrivacySettingsConfigData sInstance;
+
     private boolean mBackupEnabled;
     private boolean mBackupGray;
     private Intent mConfigIntent;
@@ -26,7 +29,7 @@ public class PrivacySettingsConfigData {
     private Intent mManageIntent;
     private String mManageLabel;
 
-    public PrivacySettingsConfigData() {
+    private PrivacySettingsConfigData() {
         mBackupEnabled = false;
         mBackupGray = false;
         mConfigIntent = null;
@@ -35,6 +38,13 @@ public class PrivacySettingsConfigData {
         mManageLabel = null;
     }
 
+    public static PrivacySettingsConfigData getInstance() {
+        if (sInstance == null) {
+            sInstance = new PrivacySettingsConfigData();
+        }
+        return sInstance;
+    }
+
     public boolean isBackupEnabled() {
         return mBackupEnabled;
     }