Enable Mojo to download from file URLs

mojo/loader/loader.cc

Index: mojo/loader/loader.cc
diff --git a/mojo/loader/loader.cc b/mojo/loader/loader.cc
index 7faab92620e5d67ec7acdc696e12733a26d3d39d..c87ed0938c1aa4f27621096628920cae0f27190c 100644
--- a/mojo/loader/loader.cc
+++ b/mojo/loader/loader.cc
@@ -64,12 +64,15 @@ class Loader::Data {
 
 Loader::Loader(base::SingleThreadTaskRunner* network_runner,
                base::SingleThreadTaskRunner* file_runner,
+               scoped_ptr<net::NetworkDelegate> network_delegate,
                base::FilePath base_path)
     : data_(new Data()) {
   data_->file_runner = file_runner;
   data_->cache_thread = CreateIOThread("cache_thread");
   data_->url_request_context_getter = new URLRequestContextGetter(
-      base_path, network_runner, data_->cache_thread->message_loop_proxy());
+      base_path, network_runner, file_runner,
+      data_->cache_thread->message_loop_proxy(),
+      network_delegate.Pass());
 }
 
 Loader::~Loader() {