Add a new GetInstance() method for remaining files with singleton classes under chrome/browser.

chrome/browser/chromeos/login/signed_settings_temp_storage.cc

Index: chrome/browser/chromeos/login/signed_settings_temp_storage.cc
diff --git a/chrome/browser/chromeos/login/signed_settings_temp_storage.cc b/chrome/browser/chromeos/login/signed_settings_temp_storage.cc
index 2e731a53bdd990723258a95044c856f2217e8669..24a0b38fab6b4eba027541ffd8e4459c4de04631 100644
--- a/chrome/browser/chromeos/login/signed_settings_temp_storage.cc
+++ b/chrome/browser/chromeos/login/signed_settings_temp_storage.cc
@@ -4,12 +4,16 @@
 
 #include "chrome/browser/chromeos/login/signed_settings_temp_storage.h"
 
+#include "base/lazy_instance.h"
 #include "base/values.h"
 #include "chrome/browser/chromeos/login/ownership_service.h"
 #include "chrome/browser/chromeos/login/signed_settings.h"
 #include "chrome/browser/prefs/pref_service.h"
 #include "chrome/common/pref_names.h"
 
+static base::LazyInstance<chromeos::SignedSettings::Delegate<bool> >
+    g_signed_settings_delegate(base::LINKER_INITIALIZED);
+
 namespace chromeos {
 
 // static
@@ -66,7 +70,7 @@ void SignedSettingsTempStorage::Finalize(PrefService* local_state) {
         temp_storage->GetStringWithoutPathExpansion(*it, &value);
         SignedSettings::CreateStorePropertyOp(
             *it, value,
-            Singleton< SignedSettings::Delegate<bool> >::get())->Execute();
+            g_signed_settings_delegate.Pointer())->Execute();
       }
       local_state->ClearPref(prefs::kSignedSettingsTempStorage);
     }