Remove PrefServiceSimple, replacing it with PrefService and PrefRegistrySimple.

chrome/browser/prefs/pref_notifier_impl_unittest.cc

Index: chrome/browser/prefs/pref_notifier_impl_unittest.cc
diff --git a/chrome/browser/prefs/pref_notifier_impl_unittest.cc b/chrome/browser/prefs/pref_notifier_impl_unittest.cc
index 3d3057ca67c9810e7b2dd45ec8d0d44f5d76e837..76e0bba194ccb4ab4c369916d734b2a6e188fc15 100644
--- a/chrome/browser/prefs/pref_notifier_impl_unittest.cc
+++ b/chrome/browser/prefs/pref_notifier_impl_unittest.cc
@@ -93,10 +93,10 @@ class PrefObserverMock : public PrefObserver {
 class PrefNotifierTest : public testing::Test {
  protected:
   virtual void SetUp() {
-    pref_service_.RegisterBooleanPref(kChangedPref,
-                                      true);
-    pref_service_.RegisterBooleanPref(kUnchangedPref,
-                                      true);
+    pref_service_.registrar()->RegisterBooleanPref(kChangedPref,
+                                                   true);
+    pref_service_.registrar()->RegisterBooleanPref(kUnchangedPref,
+                                                   true);
   }
 
   TestingPrefServiceSimple pref_service_;