base: Remove using declaration of FundamentalValue as it's no longer necessary.

chrome/browser/prefs/pref_notifier_impl_unittest.cc

 // Copyright (c) 2011 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/prefs/pref_notifier_impl.h"
 #include "chrome/browser/prefs/pref_observer_mock.h"
 #include "chrome/browser/prefs/pref_service.h"
 #include "chrome/browser/prefs/pref_value_store.h"
 #include "chrome/common/chrome_notification_types.h"
 #include "chrome/test/base/testing_pref_service.h"
@@ skipping 137 matching lines @@
   ASSERT_EQ(0u, notifier.CountObserver(pref_name2, &obs2_));
 
   notifier.RemovePrefObserver(pref_name2, &obs1_);
   ASSERT_EQ(0u, notifier.CountObserver(pref_name, &obs1_));
   ASSERT_EQ(0u, notifier.CountObserver(pref_name2, &obs1_));
   ASSERT_EQ(0u, notifier.CountObserver(pref_name, &obs2_));
   ASSERT_EQ(0u, notifier.CountObserver(pref_name2, &obs2_));
 }
 
 TEST_F(PrefNotifierTest, FireObservers) {
-  FundamentalValue value_true(true);
+  base::FundamentalValue value_true(true);
   PrefNotifierImpl notifier(&pref_service_);
   notifier.AddPrefObserver(kChangedPref, &obs1_);
   notifier.AddPrefObserver(kUnchangedPref, &obs1_);
 
   obs1_.Expect(&pref_service_, kChangedPref, &value_true);
   EXPECT_CALL(obs2_, Observe(_, _, _)).Times(0);
   notifier.OnPreferenceChanged(kChangedPref);
   Mock::VerifyAndClearExpectations(&obs1_);
   Mock::VerifyAndClearExpectations(&obs2_);
 
@@ skipping 22 matching lines @@
   obs2_.Expect(&pref_service_, kChangedPref, &value_true);
   notifier.OnPreferenceChanged(kChangedPref);
   Mock::VerifyAndClearExpectations(&obs1_);
   Mock::VerifyAndClearExpectations(&obs2_);
 
   notifier.RemovePrefObserver(kChangedPref, &obs2_);
   notifier.RemovePrefObserver(kUnchangedPref, &obs2_);
 }
 
 }  // namespace