Move mojom definitions of URL{Request,Response} into SDK

services/python/mojo_url_redirector/__mojo__.py

Index: services/python/mojo_url_redirector/__mojo__.py
diff --git a/services/python/mojo_url_redirector/__mojo__.py b/services/python/mojo_url_redirector/__mojo__.py
index a7ff3b9c8af5832a1d5d3f9743b956e7af0e9ebb..9688535981957a4711de306253058617f47adb56 100644
--- a/services/python/mojo_url_redirector/__mojo__.py
+++ b/services/python/mojo_url_redirector/__mojo__.py
@@ -15,6 +15,7 @@ import http_server_factory_mojom
 import net_address_mojom
 import network_service_mojom
 import service_provider_mojom
+import url_request_mojom
 import url_loader_mojom
 
 from mojo_application import application_delegate
@@ -91,7 +92,7 @@ class MojoUrlRedirector(http_server_mojom.HttpHandler):
 
   def RedirectToCurrentAppLocation(self, requested_platform, requested_app):
     # Construct a URLRequest to fetch the app location file...
-    app_location_request = url_loader_mojom.UrlRequest()
+    app_location_request = url_request_mojom.UrlRequest()
     app_name, _ = os.path.splitext(requested_app)
     app_location_request.url = "%s/%s/%s_location" % (
         self.app_location_files_url, requested_platform, app_name)