Move ThreadableLoader to Oilpan heap (1/3)

third_party/WebKit/Source/modules/websockets/DocumentWebSocketChannel.cpp

 /*
  * 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 62 matching lines @@
     void didFinishLoading() override;
     void didFail(FileError::ErrorCode) override;
 
     DEFINE_INLINE_TRACE()
     {
         visitor->trace(m_channel);
     }
 
 private:
     Member<DocumentWebSocketChannel> m_channel;
-    FileReaderLoader m_loader;
+    std::unique_ptr<FileReaderLoader> m_loader;
 };
 
 class DocumentWebSocketChannel::Message : public GarbageCollectedFinalized<DocumentWebSocketChannel::Message> {
 public:
     explicit Message(const CString&);
     explicit Message(PassRefPtr<BlobDataHandle>);
     explicit Message(DOMArrayBuffer*);
     // For WorkerWebSocketChannel
     explicit Message(std::unique_ptr<Vector<char>>, MessageType);
     // Close message
     Message(unsigned short code, const String& reason);
 
     DEFINE_INLINE_TRACE()
     {
         visitor->trace(arrayBuffer);
     }
 
     MessageType type;
 
     CString text;
     RefPtr<BlobDataHandle> blobDataHandle;
     Member<DOMArrayBuffer> arrayBuffer;
     std::unique_ptr<Vector<char>> vectorData;
     unsigned short code;
     String reason;
 };
 
 DocumentWebSocketChannel::BlobLoader::BlobLoader(PassRefPtr<BlobDataHandle> blobDataHandle, DocumentWebSocketChannel* channel)
     : m_channel(channel)
-    , m_loader(FileReaderLoader::ReadAsArrayBuffer, this)
+    , m_loader(FileReaderLoader::create(FileReaderLoader::ReadAsArrayBuffer, this))
 {
-    m_loader.start(channel->getExecutionContext(), blobDataHandle);
+    m_loader->start(channel->getExecutionContext(), blobDataHandle);
 }
 
 void DocumentWebSocketChannel::BlobLoader::cancel()
 {
-    m_loader.cancel();
+    m_loader->cancel();
     // didFail will be called immediately.
     // |this| is deleted here.
 }
 
 void DocumentWebSocketChannel::BlobLoader::didFinishLoading()
 {
-    m_channel->didFinishLoadingBlob(m_loader.arrayBufferResult());
+    m_channel->didFinishLoadingBlob(m_loader->arrayBufferResult());
     // |this| is deleted here.
 }
 
 void DocumentWebSocketChannel::BlobLoader::didFail(FileError::ErrorCode errorCode)
 {
     m_channel->didFailLoadingBlob(errorCode);
     // |this| is deleted here.
 }
 
 DocumentWebSocketChannel::DocumentWebSocketChannel(Document* document, WebSocketChannelClient* client, std::unique_ptr<SourceLocation> location, WebSocketHandle *handle)
@@ skipping 441 matching lines @@
 DEFINE_TRACE(DocumentWebSocketChannel)
 {
     visitor->trace(m_blobLoader);
     visitor->trace(m_messages);
     visitor->trace(m_client);
     WebSocketChannel::trace(visitor);
     ContextLifecycleObserver::trace(visitor);
 }
 
 } // namespace blink