Teach mojo_shell how to load http URLs

mojo/loader/loader.cc

Index: mojo/loader/loader.cc
diff --git a/mojo/loader/loader.cc b/mojo/loader/loader.cc
index 1ab1ebf66a964b38e2dc62cd51a775f1a449406c..c78c6d2beebe8954c45dd8bcd3bb99fbd97c755a 100644
--- a/mojo/loader/loader.cc
+++ b/mojo/loader/loader.cc
@@ -3,6 +3,7 @@
 // found in the LICENSE file.
 
 #include "base/message_loop/message_loop.h"
+#include "base/threading/thread.h"
 #include "mojo/loader/loader.h"
 #include "mojo/loader/url_request_context_getter.h"
 #include "net/url_request/url_fetcher.h"
@@ -30,6 +31,14 @@ void FetchDelegate::OnURLFetchComplete(const net::URLFetcher* source) {
   delete this;
 }
 
+scoped_ptr<base::Thread> CreateIOThread(const char* name) {
+  scoped_ptr<base::Thread> thread(new base::Thread(name));
+  base::Thread::Options options;
+  options.message_loop_type = base::MessageLoop::TYPE_IO;
+  thread->StartWithOptions(options);
+  return thread.Pass();
+}
+
 }
 
 class Loader::Data {
@@ -37,11 +46,18 @@ public:
   Data();
   ~Data();
 
+  scoped_ptr<base::Thread> network_thread_;
+  scoped_ptr<base::Thread> cache_thread_;
   scoped_refptr<URLRequestContextGetter> url_request_context_getter;
 };
 
-Loader::Data::Data()
-  : url_request_context_getter(new URLRequestContextGetter()) {
+Loader::Data::Data() {
+  network_thread_ = CreateIOThread("network_thread");
+  cache_thread_ = CreateIOThread("cache_thread");
+
+  url_request_context_getter = new URLRequestContextGetter(
+      network_thread_->message_loop_proxy(),
+      cache_thread_->message_loop_proxy());
 }
 
 Loader::Data::~Data() {