Make first pass at new OAuth-aware server authentication framework

-------------
Created by MOE: https://github.com/google/moe
MOE_MIGRATED_REVID=147081745

java/google/registry/module/backend/BUILD

@@ -31,6 +31,7 @@ java_library(
         "//java/google/registry/rde/imports",
         "//java/google/registry/request",
         "//java/google/registry/request:modules",
+        "//java/google/registry/request/auth",
         "//java/google/registry/tmch",
         "//java/google/registry/util",
         "@com_google_appengine_api_1_0_sdk",

java/google/registry/module/backend/BackendComponent.java

@@ -39,6 +39,7 @@ import google.registry.request.Modules.URLFetchServiceModule;
 import google.registry.request.Modules.UrlFetchTransportModule;
 import google.registry.request.Modules.UseAppIdentityCredentialForGoogleApisModule;
 import google.registry.request.Modules.UserServiceModule;
+import google.registry.request.auth.AuthModule;
 import google.registry.util.SystemClock.SystemClockModule;
 import google.registry.util.SystemSleeper.SystemSleeperModule;
 import javax.inject.Singleton;
@@ -48,6 +49,7 @@ import javax.inject.Singleton;
 @Component(
     modules = {
         AppIdentityCredentialModule.class,
+        AuthModule.class,
         BackendRequestComponentModule.class,
         BigqueryModule.class,
         ConfigModule.class,

java/google/registry/module/backend/BackendRequestHandler.java

@@ -16,6 +16,7 @@ package google.registry.module.backend;
 
 import com.google.appengine.api.users.UserService;
 import google.registry.request.RequestHandler;
+import google.registry.request.auth.RequestAuthenticator;
 import javax.inject.Inject;
 import javax.inject.Provider;
 
@@ -25,7 +26,8 @@ public class BackendRequestHandler
 
   @Inject BackendRequestHandler(
       Provider<BackendRequestComponent.Builder> componentBuilderProvider,
-      UserService userService) {
-    super(componentBuilderProvider, userService);
+      UserService userService,
+      RequestAuthenticator requestAuthenticator) {
+    super(componentBuilderProvider, userService, requestAuthenticator);
   }
 }