Split PrefService into PrefService, PrefServiceSimple and PrefServiceSyncable.

chrome/browser/ui/tabs/tab_strip_layout_type_prefs.cc

Index: chrome/browser/ui/tabs/tab_strip_layout_type_prefs.cc
diff --git a/chrome/browser/ui/tabs/tab_strip_layout_type_prefs.cc b/chrome/browser/ui/tabs/tab_strip_layout_type_prefs.cc
index 8362f20185cb8de94312a49dcff81c17b295f894..ef380d560bfcc569ed671a91d3ccace55f5126c9 100644
--- a/chrome/browser/ui/tabs/tab_strip_layout_type_prefs.cc
+++ b/chrome/browser/ui/tabs/tab_strip_layout_type_prefs.cc
@@ -10,9 +10,9 @@
 
 namespace chrome {
 
-void RegisterTabStripLayoutTypePrefs(PrefService* prefs) {
+void RegisterTabStripLayoutTypePrefs(PrefServiceSimple* local_state) {
   // This value is device dependant, so it goes in local state.
- prefs->RegisterIntegerPref(
+  local_state->RegisterIntegerPref(
       prefs::kTabStripLayoutType,
       static_cast<int>(TAB_STRIP_LAYOUT_SHRINK));
 }