Enable Mojo to download from file URLs

mojo/shell/url_request_context_getter.h

Index: mojo/shell/url_request_context_getter.h
diff --git a/mojo/shell/url_request_context_getter.h b/mojo/shell/url_request_context_getter.h
index 67830e7c5c5e992e59ec714dbd7990d3f9c3c620..cc9125ddc66ca8bf628eab57bf5e05deeefc0fc4 100644
--- a/mojo/shell/url_request_context_getter.h
+++ b/mojo/shell/url_request_context_getter.h
@@ -8,6 +8,7 @@
 #include "base/files/file_path.h"
 #include "base/memory/scoped_ptr.h"
 #include "base/message_loop/message_loop_proxy.h"
+#include "net/base/network_delegate.h"
 #include "net/url_request/url_request_context_getter.h"
 #include "net/url_request/url_request_context_storage.h"
 
@@ -19,7 +20,9 @@ class URLRequestContextGetter : public net::URLRequestContextGetter {
   URLRequestContextGetter(
       base::FilePath base_path,
       base::SingleThreadTaskRunner* network_task_runner,
-      base::MessageLoopProxy* cache_task_runner);
+      base::SingleThreadTaskRunner* file_task_runner,
+      base::MessageLoopProxy* cache_task_runner,
+      scoped_ptr<net::NetworkDelegate> network_delegate);
 
   virtual net::URLRequestContext* GetURLRequestContext() OVERRIDE;
   virtual scoped_refptr<base::SingleThreadTaskRunner>
@@ -30,8 +33,10 @@ class URLRequestContextGetter : public net::URLRequestContextGetter {
 
  private:
   base::FilePath base_path_;
+  scoped_refptr<base::SingleThreadTaskRunner> file_task_runner_;
   scoped_refptr<base::SingleThreadTaskRunner> network_task_runner_;
   scoped_refptr<base::MessageLoopProxy> cache_task_runner_;
+  scoped_ptr<net::NetworkDelegate> network_delegate_;
   scoped_ptr<net::NetLog> net_log_;
   scoped_ptr<net::URLRequestContextStorage> storage_;
   scoped_ptr<net::URLRequestContext> url_request_context_;