Allow multiple logging::LogMessage{Handler,Listener}s

base/logging_win.cc

 // Copyright (c) 2011 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 "base/logging_win.h"
 #include "base/memory/singleton.h"
 #include <initguid.h>  // NOLINT
 
 namespace logging {
 
@@ skipping 84 matching lines @@
   return false;
 }
 
 void LogEventProvider::Initialize(const GUID& provider_name) {
   LogEventProvider* provider = LogEventProvider::GetInstance();
 
   provider->set_provider_name(provider_name);
   provider->Register();
 
   // Register our message handler with logging.
-  SetLogMessageHandler(LogMessage);
+  PushLogMessageHandler(LogMessage);
 }
 
 void LogEventProvider::Uninitialize() {
   LogEventProvider::GetInstance()->Unregister();
 }
 
 void LogEventProvider::OnEventsEnabled() {
   // Grab the old log level so we can restore it later.
   old_log_level_ = GetMinLogLevel();
 
@@ skipping 13 matching lines @@
     SetMinLogLevel(TRACE_LEVEL_INFORMATION - level);
   }
 }
 
 void LogEventProvider::OnEventsDisabled() {
   // Restore the old log level.
   SetMinLogLevel(old_log_level_);
 }
 
 }  // namespace logging