Send message to the #WebKitWebPage corresponding to web_view.
If message is floating, it's consumed.
If you don't expect any reply, or you simply want to ignore it, you can pass null as callback.
When the operation is finished, callback will be called. You can then call
webkit.web_view.WebView.sendMessageToPageFinish to get the message reply.
Send message to the #WebKitWebPage corresponding to web_view.
If message is floating, it's consumed. If you don't expect any reply, or you simply want to ignore it, you can pass null as callback. When the operation is finished, callback will be called. You can then call webkit.web_view.WebView.sendMessageToPageFinish to get the message reply.