Revert https://src.chromium.org/viewvc/chrome?view=rev&revision=231330

ipc/ipc_logging.cc

 // 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.
 
 #include "ipc/ipc_logging.h"
 
 #ifdef IPC_MESSAGE_LOG_ENABLED
 #define IPC_MESSAGE_MACROS_LOG_ENABLED
 #endif
 
@@ skipping 78 matching lines @@
 
 void Logging::Disable() {
   enabled_ = false;
 }
 
 void Logging::OnSendLogs() {
   queue_invoke_later_pending_ = false;
   if (!sender_)
     return;
 
-  Message* msg = new Message(MSG_ROUTING_CONTROL, IPC_LOGGING_ID);
+  Message* msg = new Message(
+      MSG_ROUTING_CONTROL, IPC_LOGGING_ID, Message::PRIORITY_NORMAL);
   WriteParam(msg, queued_logs_);
   queued_logs_.clear();
   sender_->Send(msg);
 }
 
 void Logging::SetIPCSender(IPC::Sender* sender) {
   sender_ = sender;
 }
 
 void Logging::OnReceivedLoggingMessage(const Message& message) {
@@ skipping 195 matching lines @@
     data->receive = message.received_time();
     data->dispatch = Time::Now().ToInternalValue();
     data->params = params;
     data->message_name = message_name;
   }
 }
 
 }
 
 #endif  // IPC_MESSAGE_LOG_ENABLED