Add managed user lock/unlock button for the extensions page.

chrome/browser/managed_mode/managed_user_service.cc

Index: chrome/browser/managed_mode/managed_user_service.cc
diff --git a/chrome/browser/managed_mode/managed_user_service.cc b/chrome/browser/managed_mode/managed_user_service.cc
index b3261fd97667532488bb18b24d943ab4acbb2b4b..e4efd5bc0777159f2a473d5198bca66f569f0fd3 100644
--- a/chrome/browser/managed_mode/managed_user_service.cc
+++ b/chrome/browser/managed_mode/managed_user_service.cc
@@ -97,6 +97,10 @@ bool ManagedUserService::ProfileIsManaged() const {
   return profile_->GetPrefs()->GetBoolean(prefs::kProfileIsManaged);
 }
 
+bool ManagedUserService::IsElevated() const {
+  return is_elevated_;
+}
+
 // static
 void ManagedUserService::RegisterUserPrefs(PrefRegistrySyncable* registry) {
   registry->RegisterDictionaryPref(prefs::kManagedModeManualHosts,
@@ -331,7 +335,7 @@ void ManagedUserService::SetManualBehaviorForURLs(const std::vector<GURL>& urls,
   UpdateManualURLs();
 }
 
-void ManagedUserService::SetElevatedForTesting(bool is_elevated) {
+void ManagedUserService::SetElevated(bool is_elevated) {
   is_elevated_ = is_elevated;
 }