GTTF: Use a fresh TestingBrowserProcess for each test, part #4

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"
+#include "chrome/test/testing_browser_process_test.h"
 #include "content/common/notification_observer_mock.h"
 #include "content/common/notification_registrar.h"
 #include "content/common/notification_service.h"
 #include "testing/gmock/include/gmock/gmock.h"
 #include "testing/gtest/include/gtest/gtest.h"
 
 using testing::_;
 using testing::Field;
 using testing::Invoke;
 using testing::Mock;
@@ skipping 26 matching lines @@
     while ((existing_obs = it.GetNext()) != NULL) {
       if (existing_obs == obs)
         count++;
     }
 
     return count;
   }
 };
 
 // Test fixture class.
-class PrefNotifierTest : public testing::Test {
+class PrefNotifierTest : public TestingBrowserProcessTest {
  protected:
   virtual void SetUp() {
     pref_service_.RegisterBooleanPref(kChangedPref,
                                       true,
                                       PrefService::UNSYNCABLE_PREF);
     pref_service_.RegisterBooleanPref(kUnchangedPref,
                                       true,
                                       PrefService::UNSYNCABLE_PREF);
   }
 
@@ skipping 122 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