Allow MimeHandlerViewGuest be embedded inside OOPIFs

components/guest_view/common/guest_view_messages.h

 // Copyright 2015 The Chromium Authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 // IPC messages for GuestViews.
 // Multiply-included message file, hence no include guard.
 
 #include "base/values.h"
 #include "ipc/ipc_message_macros.h"
 
@@ skipping 15 matching lines @@
 // |element_instance_id| from a GuestViewBase if it is attached to one.
 // In other words, routing of input and graphics will no longer flow through
 // the container associated with the provided ID.
 IPC_MESSAGE_CONTROL1(GuestViewMsg_GuestDetached,
                      int /* element_instance_id*/)
 
 // Messages sent from the renderer to the browser.
 
 // Sent by the renderer to set initialization parameters of a Browser Plugin
 // that is identified by |element_instance_id|.
-IPC_MESSAGE_CONTROL3(GuestViewHostMsg_AttachGuest,
+IPC_MESSAGE_CONTROL4(GuestViewHostMsg_AttachGuest,
                      int /* element_instance_id */,
                      int /* guest_instance_id */,
+                     int /* embedder_routing_id */,
                      base::DictionaryValue /* attach_params */)
 
 // We have a RenderFrame with routing id of |embedder_local_frame_routing_id|.
 // We want this local frame to be replaced with a remote frame that points
 // to a GuestView. This message will attach the local frame to the guest.
 // The GuestView is identified by its ID: |guest_instance_id|.
 IPC_MESSAGE_CONTROL4(GuestViewHostMsg_AttachToEmbedderFrame,
                      int /* embedder_local_frame_routing_id */,
                      int /* element_instance_id */,
                      int /* guest_instance_id */,
                      base::DictionaryValue /* params */)
 
 // Sent by the renderer when a GuestView (identified by |view_instance_id|) has
 // been created in JavaScript.
 IPC_MESSAGE_CONTROL2(GuestViewHostMsg_ViewCreated,
                      int /* view_instance_id */,
                      std::string /* view_type */)
 
 // Sent by the renderer when a GuestView (identified by |view_instance_id|) has
 // been garbage collected in JavaScript.
 IPC_MESSAGE_CONTROL1(GuestViewHostMsg_ViewGarbageCollected,
                      int /* view_instance_id */)