[bindings] Implment postMessageImpl and replace the usage of postMessageMethodCommon.

Source/bindings/core/v8/PostMessage.h

-// 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.
-
-#ifndef PostMessage_h
-#define PostMessage_h
-
-#include "bindings/core/v8/ExceptionState.h"
-#include "bindings/core/v8/SerializedScriptValue.h"
-#include "bindings/core/v8/SerializedScriptValueFactory.h"
-#include "bindings/core/v8/V8Binding.h"
-#include "bindings/core/v8/V8BindingMacros.h"
-#include "core/dom/DOMArrayBuffer.h"
-#include "core/dom/MessagePort.h"
-#include <v8.h>
-
-namespace blink {
-
-class ExecutionContext;
-
-// FIXME: This should be auto-generated by a code generator template.
-template <class Type>
-void postMessageMethodCommon(const char* interfaceName, Type* instance, const v8::FunctionCallbackInfo<v8::Value>& info)
-{
-    ExceptionState exceptionState(ExceptionState::ExecutionContext, "postMessage", interfaceName, info.Holder(), info.GetIsolate());
-    if (UNLIKELY(info.Length() < 1)) {
-        setMinimumArityTypeError(exceptionState, 1, info.Length());
-        exceptionState.throwIfNeeded();
-        return;
-    }
-    OwnPtrWillBeRawPtr<MessagePortArray> ports = adoptPtrWillBeNoop(new MessagePortArray);
-    ArrayBufferArray arrayBuffers;
-    if (info.Length() > 1) {
-        const int transferablesArgIndex = 1;
-        if (!SerializedScriptValue::extractTransferables(info.GetIsolate(), info[transferablesArgIndex], transferablesArgIndex, *ports, arrayBuffers, exceptionState)) {
-            exceptionState.throwIfNeeded();
-            return;
-        }
-    }
-    RefPtr<SerializedScriptValue> message = SerializedScriptValueFactory::instance().create(info.GetIsolate(), info[0], ports.get(), &arrayBuffers, exceptionState);
-    if (exceptionState.throwIfNeeded())
-        return;
-    // FIXME: Only pass context/exceptionState if instance really requires it.
-    ExecutionContext* context = currentExecutionContext(info.GetIsolate());
-    instance->postMessage(context, message.release(), ports.get(), exceptionState);
-    exceptionState.throwIfNeeded();
-}
-
-} // namespace blink
-
-#endif // PostMessage_h