Split PrefService into PrefService, PrefServiceSimple and PrefServiceSyncable.

chrome/browser/extensions/app_notify_channel_setup_unittest.cc

Index: chrome/browser/extensions/app_notify_channel_setup_unittest.cc
diff --git a/chrome/browser/extensions/app_notify_channel_setup_unittest.cc b/chrome/browser/extensions/app_notify_channel_setup_unittest.cc
index bd5966301ac73ed74ee6e2179ec5fbe8235084af..730c2c1f45628a7bbb77e036085b3b85a8733f67 100644
--- a/chrome/browser/extensions/app_notify_channel_setup_unittest.cc
+++ b/chrome/browser/extensions/app_notify_channel_setup_unittest.cc
@@ -182,9 +182,7 @@ class AppNotifyChannelSetupTest : public testing::Test {
   virtual ~AppNotifyChannelSetupTest() {}
 
   virtual void SetLoggedInUser(const std::string username) {
-    TestingPrefService* prefs = profile_.GetTestingPrefService();
-    prefs->SetUserPref(prefs::kGoogleServicesUsername,
-                       new StringValue(username));
+    profile_.GetPrefs()->SetString(prefs::kGoogleServicesUsername, username);
   }
 
   virtual AppNotifyChannelSetup* CreateInstance() {