Update components for new prefs location.

components/network_time/network_time_tracker_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/network_time/network_time_tracker.h"
 
 #include <math.h>
 #include <stdint.h>
 
 #include "base/compiler_specific.h"
-#include "base/prefs/testing_pref_service.h"
 #include "base/time/tick_clock.h"
+#include "components/prefs/testing_pref_service.h"
 #include "testing/gtest/include/gtest/gtest.h"
 
 namespace network_time {
 
 namespace {
 
 // These are all in milliseconds.
 const int64_t kLatency1 = 50;
 const int64_t kLatency2 = 500;
 
@@ skipping 130 matching lines @@
   AddToTicksNow(kPseudoSleepTime2);
   UpdateNetworkTime(
       old_now,
       base::TimeDelta::FromMilliseconds(kResolution2),
       base::TimeDelta::FromMilliseconds(kLatency2),
       old_ticks);
   EXPECT_TRUE(ValidateExpectedTime());
 }
 
 }  // namespace network_time