Split PrefService into PrefService, PrefServiceSimple and PrefServiceSyncable.

chrome/browser/ui/alternate_error_tab_observer.cc

Index: chrome/browser/ui/alternate_error_tab_observer.cc
diff --git a/chrome/browser/ui/alternate_error_tab_observer.cc b/chrome/browser/ui/alternate_error_tab_observer.cc
index 6bac4c32d1d8a29081c3ddccaf34bc91e9291d12..bf5258640595f837f5e56a2fe92be1578a818184 100644
--- a/chrome/browser/ui/alternate_error_tab_observer.cc
+++ b/chrome/browser/ui/alternate_error_tab_observer.cc
@@ -22,7 +22,7 @@ AlternateErrorPageTabObserver::AlternateErrorPageTabObserver(
     WebContents* web_contents)
     : content::WebContentsObserver(web_contents),
       profile_(Profile::FromBrowserContext(web_contents->GetBrowserContext())) {
-  PrefService* prefs = profile_->GetPrefs();
+  PrefServiceSyncable* prefs = profile_->GetPrefs();
   if (prefs) {
     pref_change_registrar_.Init(prefs);
     pref_change_registrar_.Add(
@@ -40,9 +40,10 @@ AlternateErrorPageTabObserver::~AlternateErrorPageTabObserver() {
 }
 
 // static
-void AlternateErrorPageTabObserver::RegisterUserPrefs(PrefService* prefs) {
+void AlternateErrorPageTabObserver::RegisterUserPrefs(
+    PrefServiceSyncable* prefs) {
   prefs->RegisterBooleanPref(prefs::kAlternateErrorPagesEnabled, true,
-                             PrefService::SYNCABLE_PREF);
+                             PrefServiceSyncable::SYNCABLE_PREF);
 }
 
 ////////////////////////////////////////////////////////////////////////////////