Add webkitPostMessage to allow for adding transferable support.
This adds webkitPostMessage, currently identical to postMessage, which
would later be a vehicle for adding transferable support for messaging.

Based on patch by Luke Zarko.

Reviewed by David Levin.

* bindings/js/JSDOMWindowCustom.cpp:
(WebCore::JSDOMWindow::webkitPostMessage):
* bindings/js/JSDedicatedWorkerContextCustom.cpp:
(WebCore::JSDedicatedWorkerContext::webkitPostMessage):
* bindings/js/JSMessageEventCustom.cpp:
(WebCore::JSMessageEvent::webkitInitMessageEvent):
* bindings/js/JSMessagePortCustom.cpp:
(WebCore::JSMessagePort::webkitPostMessage):
* bindings/js/JSWorkerCustom.cpp:
(WebCore::JSWorker::postMessage):
(WebCore::JSWorker::webkitPostMessage):
* bindings/v8/custom/V8DOMWindowCustom.cpp:
(WebCore::handlePostMessageCallback):
(WebCore::V8DOMWindow::postMessageCallback):
(WebCore::V8DOMWindow::webkitPostMessageCallback):
* bindings/v8/custom/V8DedicatedWorkerContextCustom.cpp:
(WebCore::handlePostMessageCallback):
(WebCore::V8DedicatedWorkerContext::postMessageCallback):
(WebCore::V8DedicatedWorkerContext::webkitPostMessageCallback):
* bindings/v8/custom/V8MessageEventCustom.cpp:
(WebCore::V8MessageEvent::initMessageEventCallback):
(WebCore::V8MessageEvent::webkitInitMessageEventCallback):
* bindings/v8/custom/V8MessagePortCustom.cpp:
(WebCore::handlePostMessageCallback):
(WebCore::V8MessagePort::postMessageCallback):
(WebCore::V8MessagePort::webkitPostMessageCallback):
* bindings/v8/custom/V8WorkerCustom.cpp:
(WebCore::handlePostMessageCallback):
(WebCore::V8Worker::postMessageCallback):
(WebCore::V8Worker::webkitPostMessageCallback):
* dom/MessageEvent.idl:
* dom/MessagePort.idl:
* page/DOMWindow.idl:
* workers/DedicatedWorkerContext.idl:
* workers/Worker.idl:

LayoutTests: https://bugs.webkit.org/show_bug.cgi?id=66714
Add webkitPostMessage to allow for adding transferable support.
This adds webkitPostMessage, currently identical to postMessage, which
would later be a vehicle for adding transferable support for messaging.
The tests ensure that webkitPostMessage and postMessage behave identically.

Based on patch by Luke Zarko.

Reviewed by David Levin.

* fast/dom/Window/window-postmessage-args-expected.txt:
* fast/dom/Window/window-postmessage-args.html:
* fast/dom/Window/window-property-descriptors-expected.txt:
* fast/events/message-port-expected.txt:
* fast/events/message-port.html:
* fast/workers/resources/worker-call.js:
* fast/workers/worker-call-expected.txt:
* platform/chromium/fast/dom/Window/window-postmessage-args-expected.txt:


git-svn-id: http://svn.webkit.org/repository/webkit/trunk@95362 268f45cc-cd09-0410-ab3c-d52691b4dbfc