Switch to standard integer types in components/, part 2 of 4.

components/metrics/metrics_log_manager_unittest.cc

 // Copyright 2014 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/metrics/metrics_log_manager.h"
 
+#include <stddef.h>
+
 #include <string>
 #include <utility>
 #include <vector>
 
 #include "base/prefs/pref_registry_simple.h"
 #include "base/prefs/testing_pref_service.h"
 #include "components/metrics/metrics_log.h"
 #include "components/metrics/metrics_pref_names.h"
 #include "components/metrics/test_metrics_service_client.h"
 #include "testing/gtest/include/gtest/gtest.h"
@@ skipping 278 matching lines @@
     log_manager.FinishCurrentLog();
     log_manager.DiscardStagedLog();
 
     log_manager.PersistUnsentLogs();
     EXPECT_EQ(0U, pref_service.TypeCount(MetricsLog::INITIAL_STABILITY_LOG));
     EXPECT_EQ(1U, pref_service.TypeCount(MetricsLog::ONGOING_LOG));
   }
 }
 
 }  // namespace metrics