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

chrome/browser/media/webrtc_browsertest_base.h

 // Copyright 2013 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.
 
 #ifndef CHROME_BROWSER_MEDIA_WEBRTC_BROWSERTEST_BASE_H_
 #define CHROME_BROWSER_MEDIA_WEBRTC_BROWSERTEST_BASE_H_
 
 #include <string>
 
 #include "base/macros.h"
@@ skipping 168 matching lines @@
       std::string default_video_codec = kUseDefaultVideoCodec) const;
   void ReceiveAnswer(const std::string& answer,
                      content::WebContents* from_tab) const;
   void GatherAndSendIceCandidates(content::WebContents* from_tab,
                                   content::WebContents* to_tab) const;
 
   infobars::InfoBar* GetUserMediaAndWaitForInfoBar(
       content::WebContents* tab_contents,
       const std::string& constraints) const;
 
+  logging::ScopedLogMessageListener listener;

[Dan Beam, 2016/07/15 03:11:19]

nit: log_listener_

[wychen, 2016/07/18 15:44:12]

Done.

   bool detect_errors_in_javascript_;
 
   DISALLOW_COPY_AND_ASSIGN(WebRtcTestBase);
 };
 
 #endif  // CHROME_BROWSER_MEDIA_WEBRTC_BROWSERTEST_BASE_H_