[NaCl SDK] Consistent use of copyright header.

native_client_sdk/src/libraries/nacl_io/mount_http.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_http.h"
 
 #include <assert.h>
 #include <ctype.h>
 #include <errno.h>
 #include <fcntl.h>
 #include <stdio.h>
 #include <string.h>
 #include <sys/stat.h>
@@ skipping 381 matching lines @@
   *out_manifest = text;
   return 0;
 }
 
 std::string MountHttp::MakeUrl(const Path& path) {
   return url_root_ +
          (path.IsAbsolute() ? path.Range(1, path.Size()) : path.Join());
 }
 
 }  // namespace nacl_io