[NaCl SDK] Add some more logging to nacl_io.

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

 // Copyright 2013 The Chromium Authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 #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:
   // Normal OS operations on a node (file), can be called by the kernel
   // directly so it must lock and unlock appropriately.  These functions
   // must not be called by the filesystem.
   virtual Error FSync();
   virtual Error GetDents(size_t offs,
                          struct dirent* pdir,
                          size_t count,
@@ skipping 13 matching lines @@
   virtual Error GetSize(off_t* out_size);
 
  protected:
   Html5FsNode(Filesystem* filesystem, PP_Resource fileref);
 
   // Init with standard open flags
   virtual Error Init(int open_flags);
   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.
 
   friend class Html5Fs;
 };
 
 }  // namespace nacl_io
 
 #endif  // LIBRARIES_NACL_IO_HTML5FS_HTML5_FS_NODE_H_