base: Put DISALLOW_COPY_AND_ASSIGN inside private section of classes.

base/system_monitor/system_monitor_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 "base/system_monitor/system_monitor.h"
 
 #include "base/message_loop/message_loop.h"
 #include "base/run_loop.h"
 #include "base/test/mock_devices_changed_observer.h"
 #include "testing/gmock/include/gmock/gmock.h"
 #include "testing/gtest/include/gtest/gtest.h"
 
 namespace base {
 
 namespace {
 
 class SystemMonitorTest : public testing::Test {
  protected:
   SystemMonitorTest() {
     system_monitor_.reset(new SystemMonitor);
   }
 
   MessageLoop message_loop_;
   scoped_ptr<SystemMonitor> system_monitor_;
 
+ private:
   DISALLOW_COPY_AND_ASSIGN(SystemMonitorTest);
 };
 
 TEST_F(SystemMonitorTest, DeviceChangeNotifications) {
   const int kObservers = 5;
 
   testing::Sequence mock_sequencer[kObservers];
   MockDevicesChangedObserver observers[kObservers];
   for (int index = 0; index < kObservers; ++index) {
     system_monitor_->AddDevicesChangedObserver(&observers[index]);
 
     EXPECT_CALL(observers[index],
                 OnDevicesChanged(SystemMonitor::DEVTYPE_UNKNOWN))
         .Times(3)
         .InSequence(mock_sequencer[index]);
   }
 
   system_monitor_->ProcessDevicesChanged(SystemMonitor::DEVTYPE_UNKNOWN);
   RunLoop().RunUntilIdle();
 
   system_monitor_->ProcessDevicesChanged(SystemMonitor::DEVTYPE_UNKNOWN);
   system_monitor_->ProcessDevicesChanged(SystemMonitor::DEVTYPE_UNKNOWN);
   RunLoop().RunUntilIdle();
 }
 
 }  // namespace
 
 }  // namespace base