[NaCl SDK] Consistent use of copyright header.

native_client_sdk/src/libraries/nacl_io/mount_node_mem.cc

-/* Copyright (c) 2012 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.
- */
+// Copyright (c) 2012 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.
+
 #include "nacl_io/mount_node_mem.h"
 
 #include <errno.h>
 #include <string.h>
 
 #include "nacl_io/osstat.h"
 #include "sdk_util/auto_lock.h"
 
 namespace nacl_io {
 
@@ skipping 75 matching lines @@
   if (new_size > capacity_)
     new_size = capacity_;
 
   // Update the size and return the new size
   stat_.st_size = static_cast<off_t>(new_size);
   return EIO;
 }
 
 }  // namespace nacl_io