[Extensions] Remove source/opener tab id from extension ports

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 <stdint.h>
 
 #include <string>
@@ skipping 582 matching lines @@
 
 // Dispatch the Port.onConnect event for message channels.
 IPC_MESSAGE_ROUTED5(ExtensionMsg_DispatchOnConnect,
                     int /* target_port_id */,
                     std::string /* channel_name */,
                     ExtensionMsg_TabConnectionInfo /* source */,
                     ExtensionMsg_ExternalConnectionInfo,
                     std::string /* tls_channel_id */)
 
 // Deliver a message sent with ExtensionHostMsg_PostMessage.
-IPC_MESSAGE_ROUTED3(ExtensionMsg_DeliverMessage,
+IPC_MESSAGE_ROUTED2(ExtensionMsg_DeliverMessage,
                     int /* target_port_id */,
-                    int /* source_tab_id */,
                     extensions::Message)
 
 // Dispatch the Port.onDisconnect event for message channels.
 IPC_MESSAGE_ROUTED2(ExtensionMsg_DispatchOnDisconnect,
                     int /* port_id */,
                     std::string /* error_message */)
 
 // Informs the renderer what channel (dev, beta, stable, etc) and user session
 // type is running.
 IPC_MESSAGE_CONTROL2(ExtensionMsg_SetSessionInfo,
@@ skipping 307 matching lines @@
                      int64_t /* service_worker_version_id */,
                      std::string /* request_uuid */)
 
 // Asks the browser to decrement the pending activity count for
 // the worker with version id |service_worker_version_id|.
 // |request_uuid| must match the GUID of a previous request, otherwise the
 // browser process ignores the IPC.
 IPC_MESSAGE_CONTROL2(ExtensionHostMsg_DecrementServiceWorkerActivity,
                      int64_t /* service_worker_version_id */,
                      std::string /* request_uuid */)