Add missing method in TestInjector

This will fix broken tests.

Change-Id: Ic9094b9fa7c3b88a904f82f28d9089410da800a2
diff --git a/tests/src/com/android/wallpaper/testing/TestInjector.java b/tests/src/com/android/wallpaper/testing/TestInjector.java
index 8dffdca..9b7927f 100644
--- a/tests/src/com/android/wallpaper/testing/TestInjector.java
+++ b/tests/src/com/android/wallpaper/testing/TestInjector.java
@@ -16,6 +16,8 @@
 package com.android.wallpaper.testing;
 
 import android.content.Context;
+import android.content.Intent;
+import android.net.Uri;
 
 import androidx.fragment.app.Fragment;
 
@@ -236,6 +238,11 @@
     }
 
     @Override
+    public Intent getDeepLinkRedirectIntent(Context context, Uri uri) {
+        return null;
+    }
+
+    @Override
     public PerformanceMonitor getPerformanceMonitor() {
         if (mPerformanceMonitor == null) {
             mPerformanceMonitor = new TestPerformanceMonitor();