[NaCl SDK] Add some more logging to nacl_io.

native_client_sdk/src/libraries/nacl_io/html5fs/html5_fs_node.h

Index: native_client_sdk/src/libraries/nacl_io/html5fs/html5_fs_node.h
diff --git a/native_client_sdk/src/libraries/nacl_io/html5fs/html5_fs_node.h b/native_client_sdk/src/libraries/nacl_io/html5fs/html5_fs_node.h
index e76542e0ddf042a1ca4e4f6c72a0357b8856d136..7081bf27f635af1261edcb8780350af79d6d7c73 100644
--- a/native_client_sdk/src/libraries/nacl_io/html5fs/html5_fs_node.h
+++ b/native_client_sdk/src/libraries/nacl_io/html5fs/html5_fs_node.h
@@ -5,12 +5,16 @@
 #ifndef LIBRARIES_NACL_IO_HTML5FS_HTML5_FS_NODE_H_
 #define LIBRARIES_NACL_IO_HTML5FS_HTML5_FS_NODE_H_
 
+#include <ppapi/c/pp_instance.h>
 #include <ppapi/c/pp_resource.h>
 #include "nacl_io/node.h"
 
 namespace nacl_io {
 
 class Html5Fs;
+class FileIoInterface;
+class FileRefInterface;
+class VarInterface;
 
 class Html5FsNode : public Node {
  public:
@@ -44,6 +48,9 @@ class Html5FsNode : public Node {
   virtual void Destroy();
 
  private:
+  FileIoInterface* file_io_iface_;
+  FileRefInterface* file_ref_iface_;
+  VarInterface* var_iface_;
   PP_Resource fileref_resource_;
   PP_Resource fileio_resource_;  // 0 if the file is a directory.