Oilpan: Move ConsoleMessage to the heap.

Source/core/frame/LocalDOMWindow.cpp

Index: Source/core/frame/LocalDOMWindow.cpp
diff --git a/Source/core/frame/LocalDOMWindow.cpp b/Source/core/frame/LocalDOMWindow.cpp
index f97fcb16eff4ebae13b170d71d06a9ba76508352..ba716d90e9e78dd69407f1040a287876ffe3f573 100644
--- a/Source/core/frame/LocalDOMWindow.cpp
+++ b/Source/core/frame/LocalDOMWindow.cpp
@@ -905,7 +905,7 @@ void LocalDOMWindow::dispatchMessageEventWithOriginCheck(SecurityOrigin* intende
         // Check target origin now since the target document may have changed since the timer was scheduled.
         if (!intendedTargetOrigin->isSameSchemeHostPort(document()->securityOrigin())) {
             String message = ExceptionMessages::failedToExecute("postMessage", "DOMWindow", "The target origin provided ('" + intendedTargetOrigin->toString() + "') does not match the recipient window's origin ('" + document()->securityOrigin()->toString() + "').");
-            RefPtr<ConsoleMessage> consoleMessage = ConsoleMessage::create(SecurityMessageSource, ErrorMessageLevel, message);
+            RefPtrWillBeRawPtr<ConsoleMessage> consoleMessage = ConsoleMessage::create(SecurityMessageSource, ErrorMessageLevel, message);
             consoleMessage->setCallStack(stackTrace);
             frameConsole()->addMessage(consoleMessage.release());
             return;