Sharepoint 2013 and Dynamics CRM 2013: Unable to open Sharepoint in IFRAME

With SharePoint 2013 there is new security pattern who is explained here

So for open the SharePoint page in an IFrame (like Dynamics CRM do) you need to add to the page this dedicated control:
<WebPartPages:AllowFraming runat=”server” />

I have added this control in the Master page and all go done