Move V8-based serialization into dedicated classes and add support for ArrayBuffer transfer.

third_party/WebKit/Source/bindings/core/v8/serialization/V8ScriptValueDeserializer.h

Index: third_party/WebKit/Source/bindings/core/v8/serialization/V8ScriptValueDeserializer.h
diff --git a/third_party/WebKit/Source/bindings/core/v8/serialization/V8ScriptValueDeserializer.h b/third_party/WebKit/Source/bindings/core/v8/serialization/V8ScriptValueDeserializer.h
new file mode 100644
index 0000000000000000000000000000000000000000..b1d510fe7c0f00495a539d07e74297bb26870b3e
--- /dev/null
+++ b/third_party/WebKit/Source/bindings/core/v8/serialization/V8ScriptValueDeserializer.h
@@ -0,0 +1,51 @@
+// 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 V8ScriptValueDeserializer_h
+#define V8ScriptValueDeserializer_h
+
+#include "bindings/core/v8/ScriptState.h"
+#include "bindings/core/v8/SerializedScriptValue.h"
+#include "wtf/Allocator.h"
+#include "wtf/Noncopyable.h"
+#include "wtf/RefPtr.h"
+#include <v8.h>
+
+namespace blink {
+
+// Deserializes V8 values serialized using V8ScriptValueSerializer (or its
+// predecessor, ScriptValueSerializer).
+//
+// Supports only basic JavaScript objects and core DOM types. Support for
+// modules types is implemented in a subclass.
+//
+// A deserializer cannot be used multiple times; it is expected that its
+// deserialize method will be invoked exactly once.
+class V8ScriptValueDeserializer {
+    STACK_ALLOCATED();
+    WTF_MAKE_NONCOPYABLE(V8ScriptValueDeserializer);
+public:
+    V8ScriptValueDeserializer(RefPtr<ScriptState>, RefPtr<SerializedScriptValue>);
+    v8::Local<v8::Value> deserialize();
+
+protected:
+    uint32_t version() const { return m_version; }
+
+private:
+    void transfer();
+
+    RefPtr<ScriptState> m_scriptState;
+    RefPtr<SerializedScriptValue> m_serializedScriptValue;
+    v8::ValueDeserializer m_deserializer;
+
+    // Set during deserialize after the header is read.
+    uint32_t m_version = 0;
+#if DCHECK_IS_ON()
+    bool m_deserializeInvoked = false;
+#endif
+};
+
+} // namespace blink
+
+#endif // V8ScriptValueDeserializer_h