Introduce FormDataBytesConsumer

third_party/WebKit/Source/modules/fetch/FormDataBytesConsumer.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 FormDataBytesConsumer_h
+#define FormDataBytesConsumer_h
+
+#include "modules/ModulesExport.h"
+#include "modules/fetch/BytesConsumer.h"
+#include "platform/heap/Handle.h"
+#include "wtf/Forward.h"
+#include "wtf/PassRefPtr.h"
+
+namespace blink {
+
+class DOMArrayBuffer;
+class DOMArrayBufferView;
+class EncodedFormData;
+
+class FormDataBytesConsumer final : public BytesConsumer {
+public:
+    explicit MODULES_EXPORT FormDataBytesConsumer(const String&);
+    explicit MODULES_EXPORT FormDataBytesConsumer(DOMArrayBuffer*);
+    explicit MODULES_EXPORT FormDataBytesConsumer(DOMArrayBufferView*);
+    MODULES_EXPORT FormDataBytesConsumer(ExecutionContext*, PassRefPtr<EncodedFormData>);
+    MODULES_EXPORT static FormDataBytesConsumer* createForTesting(ExecutionContext* executionContext, PassRefPtr<EncodedFormData> formData, BytesConsumer* consumer)
+    {
+        return new FormDataBytesConsumer(executionContext, formData, consumer);
+    }
+
+    // BytesConsumer implementation
+    Result beginRead(const char** buffer, size_t* available) override
+    {
+        return m_impl->beginRead(buffer, available);
+    }
+    Result endRead(size_t readSize) override
+    {
+        return m_impl->endRead(readSize);
+    }
+    PassRefPtr<BlobDataHandle> drainAsBlobDataHandle(BlobSizePolicy policy) override
+    {
+        return m_impl->drainAsBlobDataHandle(policy);
+    }
+    PassRefPtr<EncodedFormData> drainAsFormData() override
+    {
+        return m_impl->drainAsFormData();
+    }
+    void setClient(BytesConsumer::Client* client) override
+    {
+        m_impl->setClient(client);
+    }
+    void clearClient() override
+    {
+        m_impl->clearClient();
+    }
+    void cancel() override
+    {
+        m_impl->cancel();
+    }
+    PublicState getPublicState() const override
+    {
+        return m_impl->getPublicState();
+    }
+    Error getError() const override
+    {
+        return m_impl->getError();
+    }
+    String debugName() const override
+    {
+        return m_impl->debugName();
+    }
+
+    DEFINE_INLINE_TRACE()
+    {
+        visitor->trace(m_impl);
+        BytesConsumer::trace(visitor);
+    }
+
+private:
+    MODULES_EXPORT FormDataBytesConsumer(ExecutionContext*, PassRefPtr<EncodedFormData>, BytesConsumer*);
+
+    const Member<BytesConsumer> m_impl;
+};
+
+} // namespace blink
+
+#endif // FormDataBytesConsumer_h