Queue postMessage messages destined for a MimeHandlerView guest

extensions/common/extension_messages.h

 // Copyright 2014 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 extensions.
 // Multiply-included message file, hence no include guard.
 
 #include <string>
 #include <vector>
 
@@ skipping 536 matching lines @@
 // the sequential nature of IPCs so that the blob has already been caught.
 // This is a separate control message, so that the renderer process will send
 // an acknowledgement even if the RenderView has closed or navigated away.
 IPC_MESSAGE_CONTROL1(ExtensionMsg_TransferBlobs,
                      std::vector<std::string> /* blob_uuids */)
 
 // The ACK for ExtensionHostMsg_CreateMimeHandlerViewGuest.
 IPC_MESSAGE_CONTROL1(ExtensionMsg_CreateMimeHandlerViewGuestACK,
                      int /* element_instance_id */)
 
+// Once a MimeHandlerView guest's JavaScript onload function has been called,
+// this IPC is sent to the container to notify it.
+IPC_MESSAGE_CONTROL1(ExtensionMsg_MimeHandlerViewGuestOnLoadCompleted,
+                     int /* element_instance_id */)
+
 // Once a RenderView proxy has been created for the guest in the embedder render
 // process, this IPC informs the embedder of the proxy's routing ID.
 IPC_MESSAGE_CONTROL2(ExtensionMsg_GuestAttached,
-                    int /* element_instance_id */,
-                    int /* source_routing_id */)
+                     int /* element_instance_id */,
+                     int /* source_routing_id */)
 
 // This IPC tells the browser process to detach the provided
 // |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(ExtensionMsg_GuestDetached,
                      int /* element_instance_id*/)
 
 // Messages sent from the renderer to the browser.
 
@@ skipping 232 matching lines @@
                     int /* acc_obj_id */,
                     base::string16 /* selector */)
 
 // Result of a query selector request.
 // result_acc_obj_id is the accessibility tree ID of the result element; 0
 // indicates no result.
 IPC_MESSAGE_ROUTED3(ExtensionHostMsg_AutomationQuerySelector_Result,
                     int /* request_id */,
                     ExtensionHostMsg_AutomationQuerySelector_Error /* error */,
                     int /* result_acc_obj_id */)