Unrevert again r119770 - "Event pages: remember events that the page registered for,""

chrome/common/extensions/extension_messages.h

-// Copyright (c) 2011 The Chromium Authors. All rights reserved.
+// Copyright (c) 2012 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 "base/shared_memory.h"
 #include "base/values.h"
 #include "chrome/common/extensions/extension.h"
 #include "chrome/common/extensions/extension_permission_set.h"
@@ skipping 251 matching lines @@
 IPC_MESSAGE_CONTROL2(ExtensionHostMsg_AddListener,
                      std::string /* extension_id */,
                      std::string /* name */)
 
 // Notify the browser that the given extension removed a listener from an
 // event.
 IPC_MESSAGE_CONTROL2(ExtensionHostMsg_RemoveListener,
                      std::string /* extension_id */,
                      std::string /* name */)
 
+// Notify the browser that the given extension added a listener to an event from
+// a lazy background page.
+IPC_MESSAGE_CONTROL2(ExtensionHostMsg_AddLazyListener,
+                     std::string /* extension_id */,
+                     std::string /* name */)
+
+// Notify the browser that the given extension is no longer interested in
+// receiving the given event from a lazy background page.
+IPC_MESSAGE_CONTROL2(ExtensionHostMsg_RemoveLazyListener,
+                     std::string /* extension_id */,
+                     std::string /* name */)
+
 // Notify the browser that the extension is idle so it's lazy background page
 // can be closed.
 IPC_MESSAGE_CONTROL1(ExtensionHostMsg_ExtensionIdle,
                      std::string /* extension_id */)
 
 // Notify the browser that an event has finished being dispatched.
 IPC_MESSAGE_CONTROL1(ExtensionHostMsg_ExtensionEventAck,
                      std::string /* extension_id */)
 
 
@@ skipping 75 matching lines @@
 // Response to the renderer for the above message.
 IPC_MESSAGE_ROUTED3(ExtensionMsg_GetAppNotifyChannelResponse,
                     std::string /* channel_id */,
                     std::string /* error */,
                     int32 /* callback_id */)
 
 // Deliver a message sent with ExtensionHostMsg_PostMessage.
 IPC_MESSAGE_ROUTED2(ExtensionMsg_DeliverMessage,
                     int /* target_port_id */,
                     std::string /* message */)