AssociatedURLLoader shouldn't derive from WebURLLoader

content/renderer/fetchers/web_url_loader_client_impl.h

-// Copyright (c) 2011 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_RENDERER_FETCHERS_WEB_URL_LOADER_CLIENT_IMPL_H_
-#define CONTENT_RENDERER_FETCHERS_WEB_URL_LOADER_CLIENT_IMPL_H_
-
-#include <stdint.h>
-
-#include <memory>
-#include <string>
-
-#include "base/macros.h"
-#include "third_party/WebKit/public/platform/WebURLLoaderClient.h"
-#include "third_party/WebKit/public/platform/WebURLResponse.h"
-
-namespace blink {
-class WebURLLoader;
-struct WebURLError;
-}
-
-namespace content {
-
-class WebURLLoaderClientImpl : public blink::WebURLLoaderClient {
- protected:
-  enum LoadStatus {
-    LOADING,
-    LOAD_FAILED,
-    LOAD_SUCCEEDED,
-  };
-
-  WebURLLoaderClientImpl();
-  ~WebURLLoaderClientImpl() override;
-
-  virtual void Cancel();
-
-  bool completed() const { return completed_; }
-  const std::string& data() const { return data_; }
-  const blink::WebURLResponse& response() const { return response_; }
-  const std::string& metadata() const { return metadata_; }
-  LoadStatus status() const { return status_; }
-
-  virtual void OnLoadComplete() = 0;
-
- private:
-  void OnLoadCompleteInternal(LoadStatus);
-
-  // WebWebURLLoaderClientImpl methods:
-  void didReceiveResponse(blink::WebURLLoader* loader,
-                          const blink::WebURLResponse& response) override;
-  void didReceiveCachedMetadata(blink::WebURLLoader* loader,
-                                const char* data,
-                                int data_length) override;
-  void didReceiveData(blink::WebURLLoader* loader,
-                      const char* data,
-                      int data_length,
-                      int encoded_data_length,
-                      int encoded_body_length) override;
-  void didFinishLoading(blink::WebURLLoader* loader,
-                        double finishTime,
-                        int64_t total_encoded_data_length) override;
-  void didFail(blink::WebURLLoader* loader,
-               const blink::WebURLError& error) override;
-
- private:
-  // Set to true once the request is complete.
-  bool completed_;
-
-  // Buffer to hold the content from the server.
-  std::string data_;
-
-  // A copy of the original resource response.
-  blink::WebURLResponse response_;
-
-  // Buffer to hold metadata from the cache.
-  std::string metadata_;
-
-  LoadStatus status_;
-
-  DISALLOW_COPY_AND_ASSIGN(WebURLLoaderClientImpl);
-};
-
-}  // namespace content
-
-#endif  // CONTENT_RENDERER_FETCHERS_WEB_URL_LOADER_CLIENT_IMPL_H_