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sky/engine/core/html/imports/HTMLImportLoader.h

 /*
  * Copyright (C) 2013 Google Inc. All rights reserved.
  *
  * Redistribution and use in source and binary forms, with or without
  * modification, are permitted provided that the following conditions are
  * met:
  *
  *     * Redistributions of source code must retain the above copyright
  * notice, this list of conditions and the following disclaimer.
  *     * Redistributions in binary form must reproduce the above
@@ skipping 24 matching lines @@
 #include "platform/fetcher/MojoFetcher.h"
 #include "platform/heap/Handle.h"
 #include "wtf/OwnPtr.h"
 #include "wtf/PassOwnPtr.h"
 #include "wtf/Vector.h"
 
 namespace blink {
 
 class CustomElementSyncMicrotaskQueue;
 class Document;
-class DocumentWriter;
 class HTMLImportChild;
 class HTMLImportsController;
 
-
-//
-// Owning imported Document lifetime. It also implements ResourceClient through ResourceOwner
-// to feed fetched bytes to the DocumentWriter of the imported document.
-// HTMLImportLoader is owned by HTMLImportsController.
-//
-//
 class HTMLImportLoader final : public NoBaseWillBeGarbageCollectedFinalized<HTMLImportLoader>,
-                               public MojoFetcher::Client,
-                               public DataPipeDrainer::Client {
+                               public MojoFetcher::Client {
 public:
     enum State {
         StateLoading,
         StateWritten,
         StateParsed,
         StateLoaded,
         StateError
     };
 
     static PassOwnPtrWillBeRawPtr<HTMLImportLoader> create(HTMLImportsController* controller)
@@ skipping 32 matching lines @@
     PassRefPtrWillBeRawPtr<CustomElementSyncMicrotaskQueue> microtaskQueue() const;
 
     virtual void trace(Visitor*);
 
 private:
     HTMLImportLoader(HTMLImportsController*);
 
     // MojoFetcher::Client
     void OnReceivedResponse(mojo::URLResponsePtr) override;
 
-    // DataPipeDrainer::Client
-    void OnDataAvailable(const void* data, size_t num_bytes) override;
-    void OnDataComplete() override;
-
     State startWritingAndParsing(mojo::URLResponsePtr);
     State finishWriting();
     State finishParsing();
     State finishLoading();
 
     void setState(State);
     void didFinishLoading();
 #if !ENABLE(OILPAN)
     void clear();
 #endif
 
     RawPtrWillBeMember<HTMLImportsController> m_controller;
     WillBeHeapVector<RawPtrWillBeMember<HTMLImportChild> > m_imports;
     State m_state;
     RefPtrWillBeMember<Document> m_document;
-    RefPtrWillBeMember<DocumentWriter> m_writer;
     RefPtrWillBeMember<CustomElementSyncMicrotaskQueue> m_microtaskQueue;
 
     OwnPtr<MojoFetcher> m_fetcher;
-    OwnPtr<DataPipeDrainer> m_drainer;
 };
 
 } // namespace blink
 
 #endif // HTMLImportLoader_h