Update routing id of pending resource requests for reparented iframes.

content/common/resource_messages.h

 // Copyright (c) 2011 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 resource loading.
 
 // Multiply-included message file, hence no include guard.
 #include "base/shared_memory.h"
 #include "content/common/resource_response.h"
 #include "ipc/ipc_message_macros.h"
@@ skipping 142 matching lines @@
 
 // Makes a resource request via the browser.
 IPC_MESSAGE_ROUTED2(ResourceHostMsg_RequestResource,
                     int /* request_id */,
                     ResourceHostMsg_Request)
 
 // Cancels a resource request with the ID given as the parameter.
 IPC_MESSAGE_ROUTED1(ResourceHostMsg_CancelRequest,
                     int /* request_id */)
 
+// Sets a new routing id for the resource request with the ID given as the
+// parameter. This happens when a pending request is transferred to another
+// page.
+IPC_MESSAGE_ROUTED1(ResourceHostMsg_TransferRequestToNewPage,

[jam, 2011/08/15 16:31:02]

I don't see a need for this to be a routed message (most of the existing
messages should probably be control as well, but that's for another time).
routed messages are used when there are multiple instances of an object on the
other side dispatching the same message type. the routing id is used to
determine which object a message goes to. in this case, there's only one RDH in
the browser process.

[Dmitry Titov, 2011/08/15 20:50:10]

Done.

+                    int /* request_id */)
+
 // Follows a redirect that occured for the resource request with the ID given
 // as the parameter.
 IPC_MESSAGE_ROUTED3(ResourceHostMsg_FollowRedirect,
                     int /* request_id */,
                     bool /* has_new_first_party_for_cookies */,
                     GURL /* new_first_party_for_cookies */)
 
 // Makes a synchronous resource request via the browser.
 IPC_SYNC_MESSAGE_ROUTED2_1(ResourceHostMsg_SyncLoad,
                            int /* request_id */,
@@ skipping 10 matching lines @@
                     int /* request_id */)
 
 // Sent by the renderer process to acknowledge receipt of a
 // UploadProgress message.
 IPC_MESSAGE_ROUTED1(ResourceHostMsg_UploadProgress_ACK,
                     int /* request_id */)
 
 // Sent when the renderer process deletes a resource loader.
 IPC_MESSAGE_CONTROL1(ResourceHostMsg_ReleaseDownloadedFile,
                      int /* request_id */)