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

components/proximity_auth/logging/logging_unittest.cc

Index: components/proximity_auth/logging/logging_unittest.cc
diff --git a/components/proximity_auth/logging/logging_unittest.cc b/components/proximity_auth/logging/logging_unittest.cc
index ea40af1d43899644ea18e43f330e4625b5ee6e17..69bf3e7780b5ae0b664bee251d97c0acd5bedf11 100644
--- a/components/proximity_auth/logging/logging_unittest.cc
+++ b/components/proximity_auth/logging/logging_unittest.cc
@@ -37,20 +37,14 @@ bool HandleStandardLogMessage(int severity,
 
 class ProximityAuthLoggingTest : public testing::Test {
  public:
-  ProximityAuthLoggingTest() : previous_handler_(NULL) {}
-
   void SetUp() override {
     LogBuffer::GetInstance()->Clear();
     g_standard_logs.Get().clear();
 
-    previous_handler_ = logging::GetLogMessageHandler();
-    logging::SetLogMessageHandler(&HandleStandardLogMessage);
+    logging::PushLogMessageHandler(&HandleStandardLogMessage);
   }
 
-  void TearDown() override { logging::SetLogMessageHandler(previous_handler_); }
-
- private:
-  logging::LogMessageHandlerFunction previous_handler_;
+  void TearDown() override { logging::PopLogMessageHandler(); }
 };
 
 TEST_F(ProximityAuthLoggingTest, LogsSavedToBuffer) {