ServiceWorker: Show a warning when ServiceWorker(Client) attempts to send a transferable ArrayBuffer

Source/modules/serviceworkers/ServiceWorker.cpp

Index: Source/modules/serviceworkers/ServiceWorker.cpp
diff --git a/Source/modules/serviceworkers/ServiceWorker.cpp b/Source/modules/serviceworkers/ServiceWorker.cpp
index 1c3ec165e64fb211caddf8e535764babaaaa6992..56d6050aeb4262bb16f28bce856cb604bb719c43 100644
--- a/Source/modules/serviceworkers/ServiceWorker.cpp
+++ b/Source/modules/serviceworkers/ServiceWorker.cpp
@@ -35,6 +35,7 @@
 #include "core/dom/ExceptionCode.h"
 #include "core/dom/MessagePort.h"
 #include "core/events/Event.h"
+#include "core/inspector/ConsoleMessage.h"
 #include "modules/EventTargetModules.h"
 #include "public/platform/WebMessagePortChannel.h"
 #include "public/platform/WebString.h"
@@ -58,6 +59,9 @@ void ServiceWorker::postMessage(ExecutionContext* context, PassRefPtr<Serialized
         return;
     }
 
+    if (message->containsTransferableArrayBuffer())
+        context->addConsoleMessage(ConsoleMessage::create(JSMessageSource, WarningMessageLevel, "ServiceWorker cannot send an ArrayBuffer as a transferable object yet. See http://crbug.com/511119"));
+
     WebString messageString = message->toWireString();
     OwnPtr<WebMessagePortChannelArray> webChannels = MessagePort::toWebMessagePortChannelArray(channels.release());
     m_outerWorker->postMessage(messageString, webChannels.leakPtr());