Simplify the ApplicationLoader interface in preparation for changes.

shell/external_application_listener_unittest.cc

 // 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.
 
 #include "base/files/file_path.h"
 #include "base/files/file_util.h"
 #include "base/files/scoped_temp_dir.h"
 #include "base/message_loop/message_loop.h"
 #include "base/run_loop.h"
 #include "base/test/test_io_thread.h"
@@ skipping 17 matching lines @@
 #include "url/gurl.h"
 
 namespace mojo {
 namespace shell {
 
 class NotAnApplicationLoader : public ApplicationLoader {
  public:
   NotAnApplicationLoader() {}
   ~NotAnApplicationLoader() override {}
 
-  void Load(ApplicationManager* application_manager,
-            const GURL& url,
-            InterfaceRequest<Application> application_request,
-            LoadCallback callback) override {
+  void Load(const GURL& url,
+            InterfaceRequest<Application> application_request) override {
     NOTREACHED();
   }
 
   void OnApplicationError(ApplicationManager* manager,
                           const GURL& url) override {
     NOTREACHED();
   }
 };
 
 class ExternalApplicationListenerTest : public testing::Test {
@@ skipping 224 matching lines @@
   run_loop.Run();
 
   // The apps need to be destroyed on the thread where they did socket stuff.
   io_runner()->PostTask(
       FROM_HERE, base::Bind(&DestroyOnIOThread, base::Passed(&supersweet_app),
                             base::Passed(&awesome_app)));
 }
 
 }  // namespace shell
 }  // namespace mojo