[NaCl SDK] Add nacl_io and sdk_util namespaces.

native_client_sdk/src/libraries/nacl_io/typed_mount_factory.h

Index: native_client_sdk/src/libraries/nacl_io/typed_mount_factory.h
diff --git a/native_client_sdk/src/libraries/nacl_io/typed_mount_factory.h b/native_client_sdk/src/libraries/nacl_io/typed_mount_factory.h
index c859b0bb469cce4cf9b0324222f83f08140fa74d..84ec60525f12352b79a4816f01b4a8f43a544280 100644
--- a/native_client_sdk/src/libraries/nacl_io/typed_mount_factory.h
+++ b/native_client_sdk/src/libraries/nacl_io/typed_mount_factory.h
@@ -8,14 +8,16 @@
 #include "nacl_io/mount.h"
 #include "nacl_io/mount_factory.h"
 
+namespace nacl_io {
+
 template <typename T>
 class TypedMountFactory : public MountFactory {
  public:
   virtual Error CreateMount(int dev,
                             StringMap_t& args,
                             PepperInterface* ppapi,
-                            ScopedRef<Mount>* out_mount) {
-    ScopedRef<T> mnt(new T());
+                            ScopedMount* out_mount) {
+    sdk_util::ScopedRef<T> mnt(new T());
     Error error = mnt->Init(dev, args, ppapi);
     if (error)
       return error;
@@ -25,5 +27,7 @@ class TypedMountFactory : public MountFactory {
   }
 };
 
+}  // namespace nacl_io
+
 #endif  // LIBRARIES_NACL_IO_TYPED_MOUNT_FACTORY_H_