fix：1、sdk更换。2、修复bug

Assets/GoogleMobileAds/Editor/EditorLocalizationData.cs

@@ -0,0 +1,11 @@
+using System.Collections.Generic;
+
+namespace GoogleMobileAds.Editor
+{
+  public class EditorLocalizationData
+  {
+    // First key: the localization key. Second key: the language to lookup. Value: the resulting
+    // localization.
+    public Dictionary<string, Dictionary<string, string>> LocalizationsByKey { get; set; }
+  }
+}