Enable Mojo to download from file URLs

mojo/shell/shell.cc

 // Copyright 2013 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/at_exit.h"
 #include "base/command_line.h"
 #include "base/files/file_path.h"
 #include "base/logging.h"
 #include "base/message_loop/message_loop.h"
 #include "mojo/loader/loader.h"
 #include "mojo/shell/app_container.h"
+#include "mojo/shell/network_delegate.h"
 #include "mojo/shell/storage.h"
 #include "mojo/shell/switches.h"
 #include "mojo/shell/task_runners.h"
 #include "mojo/system/core_impl.h"
 #include "url/gurl.h"
 
 int main(int argc, char** argv) {
   base::AtExitManager at_exit;
   CommandLine::Init(argc, argv);
 
   mojo::system::CoreImpl::Init();
 
   base::MessageLoop message_loop(base::MessageLoop::TYPE_UI);
 
   // TODO(abarth): Group these objects into a "context" object.
   mojo::shell::TaskRunners task_runners(message_loop.message_loop_proxy());
   mojo::shell::Storage storage;
 
   const CommandLine& command_line = *CommandLine::ForCurrentProcess();
   if (!command_line.HasSwitch(switches::kApp)) {
     LOG(ERROR) << "No app path specified.";
     return 0;
   }
 
-  mojo::loader::Loader loader(task_runners.io_runner(),
-                              task_runners.file_runner(),
-                              storage.profile_path());
+  mojo::loader::Loader loader(
+      task_runners.io_runner(),
+      task_runners.file_runner(),
+      scoped_ptr<net::NetworkDelegate>(new mojo::shell::NetworkDelegate()),
+      storage.profile_path());
 
   scoped_ptr<mojo::shell::AppContainer> container(
       new mojo::shell::AppContainer);
 
   scoped_ptr<mojo::loader::Job> job = loader.Load(
     GURL(command_line.GetSwitchValueASCII(switches::kApp)),
     container.get());
 
   message_loop.Run();
   return 0;
 }