Remove IPC channel IDs.

ipc/ipc_message_utils.h

Index: ipc/ipc_message_utils.h
diff --git a/ipc/ipc_message_utils.h b/ipc/ipc_message_utils.h
index 366ab5f13e69f726a701c679db4ae9ef11a3cf2b..28cc7225be57503e6b5c8a473d993fc8de4f6dd9 100644
--- a/ipc/ipc_message_utils.h
+++ b/ipc/ipc_message_utils.h
@@ -1100,10 +1100,9 @@ struct IPC_EXPORT ParamTraits<MSG> {
 // Generic message subclasses
 
 // defined in ipc_logging.cc
-IPC_EXPORT void GenerateLogData(const std::string& channel,
-                                const Message& message,
-                                LogData* data, bool get_params);
-
+IPC_EXPORT void GenerateLogData(const Message& message,
+                                LogData* data,
+                                bool get_params);
 
 #if defined(IPC_MESSAGE_LOG_ENABLED)
 inline void AddOutputParamsToLog(const Message* msg, std::string* l) {
@@ -1130,7 +1129,7 @@ inline void ConnectMessageAndReply(const Message* msg, Message* reply) {
     // output parameters at that point.  Instead, save its data and log it
     // with the outgoing reply message when it's sent.
     LogData* data = new LogData;
-    GenerateLogData("", *msg, data, true);
+    GenerateLogData(*msg, data, true);
     msg->set_dont_log();
     reply->set_sync_log_data(data);
   }