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

chrome/browser/media/webrtc_browsertest_base.cc

 // 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.
 
 #include "chrome/browser/media/webrtc_browsertest_base.h"
 
 #include <stddef.h>
 
 #include "base/lazy_instance.h"
 #include "base/macros.h"
@@ skipping 106 matching lines @@
   scoped_refptr<content::MessageLoopRunner> message_loop_runner_;
 
   DISALLOW_COPY_AND_ASSIGN(PermissionRequestObserver);
 };
 
 }  // namespace
 
 WebRtcTestBase::WebRtcTestBase(): detect_errors_in_javascript_(false) {
   // The handler gets set for each test method, but that's fine since this
   // set operation is idempotent.
-  logging::SetLogMessageHandler(&JavascriptErrorDetectingLogHandler);
+  logging::PushLogMessageHandler(&JavascriptErrorDetectingLogHandler);
   hit_javascript_errors_.Get() = false;
 
   EnablePixelOutput();
 }
 
 WebRtcTestBase::~WebRtcTestBase() {
+  logging::PopLogMessageHandler();
   if (detect_errors_in_javascript_) {
     EXPECT_FALSE(hit_javascript_errors_.Get())
         << "Encountered javascript errors during test execution (Search "
         << "for Uncaught or ERROR:CONSOLE in the test output).";
   }
 }
 
 bool WebRtcTestBase::GetUserMediaAndAccept(
     content::WebContents* tab_contents) const {
   return GetUserMediaWithSpecificConstraintsAndAccept(
@@ skipping 333 matching lines @@
 }
 
 void WebRtcTestBase::GenerateAndCloneCertificate(
     content::WebContents* tab, const std::string& keygen_algorithm) const {
   std::string javascript = base::StringPrintf(
       "generateAndCloneCertificate(%s)", keygen_algorithm.c_str());
   std::string response = ExecuteJavascript(javascript, tab);
   EXPECT_EQ("ok-generated-and-cloned", response) << "Failed to generate and "
       "clone certificate: " << response;
 }