Remove #pragma once from content

content/common/indexed_db/indexed_db_key_path.h

 // 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.
 
 #ifndef CONTENT_COMMON_INDEXED_DB_INDEXED_DB_KEY_PATH_H_
 #define CONTENT_COMMON_INDEXED_DB_INDEXED_DB_KEY_PATH_H_
-#pragma once
 
 #include <vector>
 
 #include "base/basictypes.h"
 #include "base/string16.h"
 #include "content/common/content_export.h"
 #include "third_party/WebKit/Source/WebKit/chromium/public/WebIDBKeyPath.h"
 
 namespace content {
 
@@ skipping 18 matching lines @@
 
  private:
   WebKit::WebIDBKeyPath::Type type_;
   std::vector<string16> array_;
   string16 string_;
 };
 
 }  // namespace content
 
 #endif  // CONTENT_COMMON_INDEXED_DB_INDEXED_DB_KEY_PATH_H_