Native Messaging!

chrome/common/extensions/extension_messages.h

Index: chrome/common/extensions/extension_messages.h
diff --git a/chrome/common/extensions/extension_messages.h b/chrome/common/extensions/extension_messages.h
index 18836008f6f1b522b0746589d539d433321003bb..5d7f5c670b9df4432c831885e1abd4cdec871bad 100644
--- a/chrome/common/extensions/extension_messages.h
+++ b/chrome/common/extensions/extension_messages.h
@@ -442,6 +442,14 @@ IPC_SYNC_MESSAGE_CONTROL4_1(ExtensionHostMsg_OpenChannelToExtension,
                             std::string /* channel_name */,
                             int /* port_id */)
 
+IPC_SYNC_MESSAGE_CONTROL5_1(ExtensionHostMsg_OpenChannelToNativeApp,
+                            int /* routing_id */,
+                            std::string /* source_extension_id */,
+                            std::string /* native_app_name */,
+                            std::string /* channel_name */,
+                            std::string /* connection_message */,
+                            int /* port_id */)
+
 // Get a port handle to the given tab.  The handle can be used for sending
 // messages to the extension.
 IPC_SYNC_MESSAGE_CONTROL4_1(ExtensionHostMsg_OpenChannelToTab,