Split PrefService into PrefService, PrefServiceSimple and PrefServiceSyncable.

chrome/browser/extensions/platform_app_browsertest.cc

Index: chrome/browser/extensions/platform_app_browsertest.cc
diff --git a/chrome/browser/extensions/platform_app_browsertest.cc b/chrome/browser/extensions/platform_app_browsertest.cc
index 7902b4f3cfc937b7ae949d8e57558c9dab5f3b31..aa1c26bc0ee982c4a8375e5d395f8f767a63a0d7 100644
--- a/chrome/browser/extensions/platform_app_browsertest.cc
+++ b/chrome/browser/extensions/platform_app_browsertest.cc
@@ -895,7 +895,7 @@ IN_PROC_BROWSER_TEST_F(PlatformAppBrowserTest,
   pref_path += extension->id();
   pref_path += ".manifest.version";
   extension_prefs->pref_service()->RegisterStringPref(
-      pref_path.c_str(), std::string(), PrefServiceBase::UNSYNCABLE_PREF);
+      pref_path.c_str(), std::string(), PrefServiceSyncable::UNSYNCABLE_PREF);
   extension_prefs->pref_service()->Set(pref_path.c_str(), old_version);
 }