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

net/tools/stress_cache/stress_cache.cc

Index: net/tools/stress_cache/stress_cache.cc
diff --git a/net/tools/stress_cache/stress_cache.cc b/net/tools/stress_cache/stress_cache.cc
index b4375f49d475b4c4641ad5401aee04dad536974f..5e089283e9e1582e11459a8fed5ddf373b92380d 100644
--- a/net/tools/stress_cache/stress_cache.cc
+++ b/net/tools/stress_cache/stress_cache.cc
@@ -384,8 +384,11 @@ void CrashHandler(const std::string& str) {
   base::debug::BreakDebugger();
 }
 
-bool MessageHandler(int severity, const char* file, int line,
-                    size_t message_start, const std::string& str) {
+void MessageListener(int severity,
+                     const char* file,
+                     int line,
+                     size_t message_start,
+                     const std::string& str) {
   const size_t kMaxMessageLen = 48;
   char message[kMaxMessageLen];
   size_t len = std::min(str.length() - message_start, kMaxMessageLen - 1);
@@ -395,7 +398,6 @@ bool MessageHandler(int severity, const char* file, int line,
 #if !defined(DISK_CACHE_TRACE_TO_LOG)
   disk_cache::Trace("%s", message);
 #endif
-  return false;
 }
 
 // -----------------------------------------------------------------------
@@ -415,7 +417,7 @@ int main(int argc, const char* argv[]) {
     return MasterCode();
 
   logging::SetLogAssertHandler(CrashHandler);
-  logging::SetLogMessageHandler(MessageHandler);
+  logging::AddLogMessageListener(MessageListener);
 
 #if defined(OS_WIN)
   logging::LogEventProvider::Initialize(kStressCacheTraceProviderName);