Remove SupportsUserData from ResourceRequestBodyImpl.

content/common/resource_request_body_impl.h

 // Copyright 2014 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_RESOURCE_REQUEST_BODY_IMPL_H_
 #define CONTENT_COMMON_RESOURCE_REQUEST_BODY_IMPL_H_
 
 #include <stdint.h>
 
 #include <vector>
 
 #include "base/macros.h"
 #include "base/memory/ref_counted.h"
-#include "base/supports_user_data.h"
 #include "content/common/content_export.h"
 #include "content/public/common/resource_request_body.h"
 #include "storage/common/data_element.h"
 #include "url/gurl.h"
 
 namespace base {
 class FilePath;
 }
 
 namespace content {
 
 // A struct used to represent upload data. The data field is populated by
 // WebURLLoader from the data given as WebHTTPBody.
-class CONTENT_EXPORT ResourceRequestBodyImpl : public ResourceRequestBody,
-                                               public base::SupportsUserData {
+class CONTENT_EXPORT ResourceRequestBodyImpl : public ResourceRequestBody {
  public:
   typedef storage::DataElement Element;
 
   ResourceRequestBodyImpl();
 
   void AppendBytes(const char* bytes, int bytes_len);
   void AppendFileRange(const base::FilePath& file_path,
                        uint64_t offset,
                        uint64_t length,
                        const base::Time& expected_modification_time);
@@ skipping 32 matching lines @@
   int64_t identifier_;
 
   bool contains_sensitive_info_;
 
   DISALLOW_COPY_AND_ASSIGN(ResourceRequestBodyImpl);
 };
 
 }  // namespace content
 
 #endif  // CONTENT_COMMON_RESOURCE_REQUEST_BODY_IMPL_H_