Mojo: teach launcher about mojo:// URLs.

mojo/services/public/interfaces/launcher/launcher.mojom

 // Copyright 2014 The Chromium Authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
-import "../network/url_loader.mojom"
+import "../../../navigation/navigation.mojom"
 
 module mojo.launcher {
 
 [Client=LauncherClient]
 interface Launcher {
   Launch(string url);
 };
 
 [Client=Launcher]
 interface LauncherClient {
-  OnLaunch(string handler_url, mojo.URLResponse response,
-           handle<data_pipe_consumer> response_body_stream);
+  // |response| can be NULL if a launcher did not need to perform a request to
+  // determine handler_url.
+  OnLaunch(string requested_url, string handler_url,
+           mojo.navigation.ResponseDetails response);
 };
 
 }