Move ThreadableLoader to Oilpan heap (1/3)

third_party/WebKit/Source/modules/presentation/PresentationConnection.cpp

 // Copyright 2014 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.
 
 #include "modules/presentation/PresentationConnection.h"
 
 #include "bindings/core/v8/ScriptPromiseResolver.h"
 #include "core/dom/DOMArrayBuffer.h"
 #include "core/dom/DOMArrayBufferView.h"
 #include "core/dom/Document.h"
@@ skipping 105 matching lines @@
     MessageType type;
     String text;
     Member<DOMArrayBuffer> arrayBuffer;
     RefPtr<BlobDataHandle> blobDataHandle;
 };
 
 class PresentationConnection::BlobLoader final : public GarbageCollectedFinalized<PresentationConnection::BlobLoader>, public FileReaderLoaderClient {
 public:
     BlobLoader(PassRefPtr<BlobDataHandle> blobDataHandle, PresentationConnection* PresentationConnection)
         : m_PresentationConnection(PresentationConnection)
-        , m_loader(FileReaderLoader::ReadAsArrayBuffer, this)
+        , m_loader(FileReaderLoader::create(FileReaderLoader::ReadAsArrayBuffer, this))
     {
-        m_loader.start(m_PresentationConnection->getExecutionContext(), blobDataHandle);
+        m_loader->start(m_PresentationConnection->getExecutionContext(), blobDataHandle);
     }
     ~BlobLoader() override { }
 
     // FileReaderLoaderClient functions.
     void didStartLoading() override { }
     void didReceiveData() override { }
     void didFinishLoading() override
     {
-        m_PresentationConnection->didFinishLoadingBlob(m_loader.arrayBufferResult());
+        m_PresentationConnection->didFinishLoadingBlob(m_loader->arrayBufferResult());
     }
     void didFail(FileError::ErrorCode errorCode) override
     {
         m_PresentationConnection->didFailLoadingBlob(errorCode);
     }
 
     void cancel()
     {
-        m_loader.cancel();
+        m_loader->cancel();
     }
 
     DEFINE_INLINE_TRACE()
     {
         visitor->trace(m_PresentationConnection);
     }
 
 private:
     Member<PresentationConnection> m_PresentationConnection;
-    FileReaderLoader m_loader;
+    std::unique_ptr<FileReaderLoader> m_loader;
 };
 
 PresentationConnection::PresentationConnection(LocalFrame* frame, const String& id, const String& url)
     : DOMWindowProperty(frame)
     , m_id(id)
     , m_url(url)
     , m_state(WebPresentationConnectionState::Connected)
     , m_binaryType(BinaryTypeBlob)
 {
 }
@@ skipping 286 matching lines @@
 {
     // Cancel current Blob loading if any.
     if (m_blobLoader) {
         m_blobLoader->cancel();
         m_blobLoader.clear();
     }
     m_messages.clear();
 }
 
 } // namespace blink