AssociatedURLLoader shouldn't derive from WebURLLoader

third_party/WebKit/Source/web/WebAssociatedURLLoaderImpl.h

Index: third_party/WebKit/Source/web/WebAssociatedURLLoaderImpl.h
diff --git a/third_party/WebKit/Source/web/WebAssociatedURLLoaderImpl.h b/third_party/WebKit/Source/web/WebAssociatedURLLoaderImpl.h
new file mode 100644
index 0000000000000000000000000000000000000000..3d8eb0673a949aa3fab9af62aef87f859a23751d
--- /dev/null
+++ b/third_party/WebKit/Source/web/WebAssociatedURLLoaderImpl.h
@@ -0,0 +1,71 @@
+// 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 WebAssociatedURLLoaderImpl_h
+#define WebAssociatedURLLoaderImpl_h
+
+#include "platform/heap/Handle.h"
+#include "public/web/WebAssociatedURLLoader.h"
+#include "public/web/WebAssociatedURLLoaderOptions.h"
+#include "wtf/Noncopyable.h"
+#include "wtf/RefPtr.h"
+#include <memory>
+
+namespace blink {
+
+class DocumentThreadableLoader;
+class WebAssociatedURLLoaderClient;
+class WebLocalFrameImpl;
+
+// This class is used to implement WebFrame::createAssociatedURLLoader.
+class WebAssociatedURLLoaderImpl final : public WebAssociatedURLLoader {
+  WTF_MAKE_NONCOPYABLE(WebAssociatedURLLoaderImpl);
+
+ public:
+  WebAssociatedURLLoaderImpl(WebLocalFrameImpl*,
+                             const WebAssociatedURLLoaderOptions&);
+  ~WebAssociatedURLLoaderImpl();
+
+  void loadAsynchronously(const WebURLRequest&,
+                          WebAssociatedURLLoaderClient*) override;
+  void cancel() override;
+  void setDefersLoading(bool) override;
+  void setLoadingTaskRunner(blink::WebTaskRunner*) override;
+
+  // Called by |m_observer| to handle destruction of the Document associated
+  // with the frame given to the constructor.
+  void documentDestroyed();
+
+  // Called by ClientAdapter to handle completion of loading.
+  void clientAdapterDone();
+
+ private:
+  class ClientAdapter;
+  class Observer;
+
+  void cancelLoader();
+  void disposeObserver();
+
+  WebAssociatedURLLoaderClient* releaseClient() {
+    WebAssociatedURLLoaderClient* client = m_client;
+    m_client = nullptr;
+    return client;
+  }
+
+  WebAssociatedURLLoaderClient* m_client;
+  WebAssociatedURLLoaderOptions m_options;
+
+  // An adapter which converts the DocumentThreadableLoaderClient method
+  // calls into the WebURLLoaderClient method calls.
+  std::unique_ptr<ClientAdapter> m_clientAdapter;
+  Persistent<DocumentThreadableLoader> m_loader;
+
+  // A ContextLifecycleObserver for cancelling |m_loader| when the Document
+  // is detached.
+  Persistent<Observer> m_observer;
+};
+
+}  // namespace blink
+
+#endif