Splits shelf alignment and auto-hide behavior into two values, one

chrome/browser/prefs/pref_service.cc

Index: chrome/browser/prefs/pref_service.cc
diff --git a/chrome/browser/prefs/pref_service.cc b/chrome/browser/prefs/pref_service.cc
index 043be894b98e17abfb8a6f0b0d3478e1eea0309f..cca8041c850284e277887d6be536316148ee68bd 100644
--- a/chrome/browser/prefs/pref_service.cc
+++ b/chrome/browser/prefs/pref_service.cc
@@ -27,6 +27,7 @@
 #include "chrome/browser/prefs/command_line_pref_store.h"
 #include "chrome/browser/prefs/pref_model_associator.h"
 #include "chrome/browser/prefs/pref_notifier_impl.h"
+#include "chrome/browser/prefs/pref_service_observer.h"
 #include "chrome/browser/prefs/pref_value_store.h"
 #include "chrome/browser/profiles/profile.h"
 #include "chrome/browser/ui/prefs/prefs_tab_helper.h"
@@ -256,6 +257,23 @@ void PrefService::CommitPendingWrite() {
   user_pref_store_->CommitPendingWrite();
 }
 
+void PrefService::AddObserver(PrefServiceObserver* observer) {
+  observer_list_.AddObserver(observer);
+}
+
+void PrefService::RemoveObserver(PrefServiceObserver* observer) {
+  observer_list_.RemoveObserver(observer);
+}
+
+bool PrefService::HasSynced() {
+  return pref_sync_associator_.get() &&
+      pref_sync_associator_->models_associated();
+}
+
+void PrefService::HasSyncedChanged() {
+  FOR_EACH_OBSERVER(PrefServiceObserver, observer_list_, OnHasSyncedChanged());
+}
+
 namespace {
 
 // If there's no g_browser_process or no local state, return true (for testing).