Convert ARRAYSIZE_UNSAFE -> arraysize in chrome/browser/.

chrome/browser/metrics/variations/variations_service_unittest.cc

 // Copyright (c) 2012 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/metrics/variations/variations_service.h"
 
 #include <vector>
 
 #include "base/base64.h"
 #include "base/prefs/testing_pref_service.h"
@@ skipping 375 matching lines @@
       {0, 1, 0, 1, 0},
       {0, 10, 0, 1, 0},
       {0, 0, 1, 0, 1},
       {0, 0, 10, 0, 1},
       {0, 1, 1, 0, 1},
       {1, 1, 1, 0, 1},
       {1, 1, 0, 1, 0},
       {1, 0, 1, 0, 1},
   };
 
-  for (size_t i = 0; i < ARRAYSIZE_UNSAFE(cases); ++i) {
+  for (size_t i = 0; i < arraysize(cases); ++i) {
     TestVariationsServiceObserver observer;
     service.AddObserver(&observer);
 
     variations::VariationsSeedSimulator::Result result;
     result.normal_group_change_count = cases[i].normal_count;
     result.kill_best_effort_group_change_count = cases[i].best_effort_count;
     result.kill_critical_group_change_count = cases[i].critical_count;
     service.NotifyObservers(result);
 
     EXPECT_EQ(cases[i].expected_best_effort_notifications,
               observer.best_effort_changes_notified()) << i;
     EXPECT_EQ(cases[i].expected_crtical_notifications,
               observer.crticial_changes_notified()) << i;
 
     service.RemoveObserver(&observer);
   }
 }
 
 }  // namespace chrome_variations