Added Protector backup for Preferences.

chrome/browser/protector/protector_service_factory.cc

Index: chrome/browser/protector/protector_service_factory.cc
diff --git a/chrome/browser/protector/protector_service_factory.cc b/chrome/browser/protector/protector_service_factory.cc
index 504673ce323e3e425f7c3064712679daa713f920..ceb487b912f4be35e4610395384ca862c0e9087d 100644
--- a/chrome/browser/protector/protector_service_factory.cc
+++ b/chrome/browser/protector/protector_service_factory.cc
@@ -6,6 +6,7 @@
 
 #include "chrome/browser/profiles/profile.h"
 #include "chrome/browser/profiles/profile_dependency_manager.h"
+#include "chrome/browser/protector/protected_prefs_watcher.h"
 #include "chrome/browser/protector/protector_service.h"
 #include "chrome/browser/search_engines/template_url_service_factory.h"
 
@@ -25,8 +26,13 @@ ProtectorServiceFactory* ProtectorServiceFactory::GetInstance() {
 ProtectorServiceFactory::ProtectorServiceFactory()
     : ProfileKeyedServiceFactory("ProtectorService",
                                  ProfileDependencyManager::GetInstance()) {
+  // Dependencies for the correct service shutdown order.
   DependsOn(GlobalErrorServiceFactory::GetInstance());
   DependsOn(TemplateURLServiceFactory::GetInstance());
+  // BUG(ivankr): to be bullet-proof, ProtectorService must outlive the
+  // ExtensionService as well and be the second to last thing destroyed in
+  // ProfileImpl (the last being the PrefService itself). This cannot be
+  // accomplished with ProfileKeyedService implementation.
 }
 
 ProtectorServiceFactory::~ProtectorServiceFactory() {
@@ -37,6 +43,16 @@ ProfileKeyedService* ProtectorServiceFactory::BuildServiceInstanceFor(
   return new ProtectorService(profile);
 }
 
+void ProtectorServiceFactory::RegisterUserPrefs(PrefService* user_prefs) {
+  ProtectedPrefsWatcher::RegisterUserPrefs(user_prefs);
+}
+
+bool ProtectorServiceFactory::ServiceIsCreatedWithProfile() {
+  // ProtectorService watches changes for protected prefs so it must be started
+  // right with the profile creation.
+  return true;
+}
+
 bool ProtectorServiceFactory::ServiceRedirectedInIncognito() {
   return true;
 }