AssociatedURLLoader shouldn't derive from WebURLLoader

third_party/WebKit/public/web/WebAssociatedURLLoaderClient.h

+// Copyright 2016 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 WebAssociatedURLLoaderClient_h
+#define WebAssociatedURLLoaderClient_h
+
+namespace blink {
+
+class WebURLRequest;
+class WebURLResponse;
+struct WebURLError;
+
+class WebAssociatedURLLoaderClient {
+ public:
+  virtual bool willFollowRedirect(const WebURLRequest& newRequest,
+                                  const WebURLResponse& redirectResponse) {
+    return true;
+  }
+  virtual void didSendData(unsigned long long bytesSent,
+                           unsigned long long totalBytesToBeSent) {}
+  virtual void didReceiveResponse(const WebURLResponse&) {}
+  virtual void didDownloadData(int dataLength) {}
+  virtual void didReceiveData(const char* data, int dataLength) {}
+  virtual void didReceiveCachedMetadata(const char* data, int dataLength) {}
+  virtual void didFinishLoading(double finishTime) {}
+  virtual void didFail(const WebURLError&) {}
+
+ protected:
+  virtual ~WebAssociatedURLLoaderClient() {}
+};
+
+}  // namespace blink
+
+#endif