WebMessaging: Show a warning when MessagePort attempts to send a transferable ArrayBuffer

Source/core/dom/MessagePort.cpp

 /*
  * Copyright (C) 2008 Apple 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:
  * 1. Redistributions of source code must retain the above copyright
  *    notice, this list of conditions and the following disclaimer.
  * 2. Redistributions in binary form must reproduce the above copyright
  *    notice, this list of conditions and the following disclaimer in the
@@ skipping 18 matching lines @@
 
 #include "bindings/core/v8/ExceptionState.h"
 #include "bindings/core/v8/ExceptionStatePlaceholder.h"
 #include "bindings/core/v8/SerializedScriptValue.h"
 #include "bindings/core/v8/SerializedScriptValueFactory.h"
 #include "core/dom/CrossThreadTask.h"
 #include "core/dom/ExceptionCode.h"
 #include "core/dom/ExecutionContext.h"
 #include "core/events/MessageEvent.h"
 #include "core/frame/LocalDOMWindow.h"
+#include "core/inspector/ConsoleMessage.h"
 #include "core/workers/WorkerGlobalScope.h"
 #include "public/platform/WebString.h"
 #include "wtf/Functional.h"
 #include "wtf/text/AtomicString.h"
 
 namespace blink {
 
 MessagePort* MessagePort::create(ExecutionContext& executionContext)
 {
     MessagePort* port = new MessagePort(executionContext);
@@ skipping 31 matching lines @@
             if (dataPort == this) {
                 exceptionState.throwDOMException(DataCloneError, "Port at index " + String::number(i) + " contains the source port.");
                 return;
             }
         }
         channels = MessagePort::disentanglePorts(context, ports, exceptionState);
         if (exceptionState.hadException())
             return;
     }
 
+    if (message->containsTransferableArrayBuffer())
+        executionContext()->addConsoleMessage(ConsoleMessage::create(JSMessageSource, WarningMessageLevel, "MessagePort cannot send an ArrayBuffer as a transferable object yet. See http://crbug.com/334408"));
+
     WebString messageString = message->toWireString();
     OwnPtr<WebMessagePortChannelArray> webChannels = toWebMessagePortChannelArray(channels.release());
     m_entangledChannel->postMessage(messageString, webChannels.leakPtr());
 }
 
 // static
 PassOwnPtr<WebMessagePortChannelArray> MessagePort::toWebMessagePortChannelArray(PassOwnPtr<MessagePortChannelArray> channels)
 {
     OwnPtr<WebMessagePortChannelArray> webChannels;
     if (channels && channels->size()) {
@@ skipping 189 matching lines @@
 {
     ASSERT(executionContext());
     if (!m_scriptStateForConversion) {
         v8::Isolate* isolate = scriptIsolate();
         m_scriptStateForConversion = ScriptState::create(v8::Context::New(isolate), DOMWrapperWorld::create(isolate));
     }
     return m_scriptStateForConversion->context();
 }
 
 } // namespace blink