Require explicit selection of traits for LazyInstance

components/proximity_auth/logging/logging_unittest.cc

 // Copyright 2015 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 "components/proximity_auth/logging/logging.h"
 
 #include <stddef.h>
 
 #include "base/lazy_instance.h"
 #include "base/numerics/safe_conversions.h"
 #include "base/strings/string_number_conversions.h"
 #include "components/proximity_auth/logging/log_buffer.h"
 #include "testing/gtest/include/gtest/gtest.h"
 
 namespace proximity_auth {
 
 namespace {
 
 const char kLog1[] = "Mahogony destined to make a sturdy table";
 const char kLog2[] = "Construction grade cedar";
 const char kLog3[] = "Pine infested by hungry beetles";
 
 // Called for every log message added to the standard logging system. The new
 // log is saved in |g_standard_logs| and consumed so it does not flood stdout.
-base::LazyInstance<std::vector<std::string>> g_standard_logs =
+base::LazyInstance<std::vector<std::string>>::DestructorAtExit g_standard_logs =
     LAZY_INSTANCE_INITIALIZER;
 bool HandleStandardLogMessage(int severity,
                               const char* file,
                               int line,
                               size_t message_start,
                               const std::string& str) {
   g_standard_logs.Get().push_back(str);
   return true;
 }
 
@@ skipping 74 matching lines @@
   PA_LOG(WARNING) << kLog2;
   PA_LOG(ERROR) << kLog3;
 
   ASSERT_EQ(3u, g_standard_logs.Get().size());
   EXPECT_NE(std::string::npos, g_standard_logs.Get()[0].find(kLog1));
   EXPECT_NE(std::string::npos, g_standard_logs.Get()[1].find(kLog2));
   EXPECT_NE(std::string::npos, g_standard_logs.Get()[2].find(kLog3));
 }
 
 }  // namespace proximity_auth