Updated preloading code snippets.

PiperOrigin-RevId: 912652275

Author: Nicholas Ventimiglia

packages/com.google.ads.mobile/Samples~/HelloWorld/Assets/Scripts/Utility/SceneMenuList.cs

@@ -30,6 +30,7 @@ public SceneInfo(string text, string sceneToLoad)
             new SceneInfo("Rewarded Interstitial Ad", "GoogleRewardedInterstitialAdScene"),
             new SceneInfo("App Open Ad", "GoogleAppOpenAdScene"),
             new SceneInfo("Native Overlay Ad", "GoogleNativeOverlayAdScene"),
+            new SceneInfo("Preload Ads", "GooglePreloadAdsScene"),
         };
 
         [Tooltip("Prefab for the SceneMenuButton.")]

packages/com.google.ads.mobile/Samples~/HelloWorld/ProjectSettings/EditorBuildSettings.asset

@@ -26,4 +26,7 @@ EditorBuildSettings:
   - enabled: 1
     path: Assets/Scenes/GoogleNativeOverlayAdScene.unity
     guid: 7dae6ce369eac46f1bdd0f6c2e80928f
+  - enabled: 1
+    path: Assets/Scenes/GooglePreloadAdsScene.unity
+    guid: be5c45d20103a4bef8a93f9942cb4084
   m_configObjects: {}