Fix build

Change-Id: I7c0601f873e37c7ebf71068ba81366704672bd70

tools/layoutlib/bridge/src/com/android/layoutlib/bridge/android/BridgePackageManager.java

@@ -307,6 +307,11 @@ public class BridgePackageManager extends PackageManager {
         return new String[0];
     }
 
+    @Override
+    public String getServicesSystemSharedLibraryPackageName() {
+        return null;
+    }
+
     @Override
     public FeatureInfo[] getSystemAvailableFeatures() {
         return new FeatureInfo[0];