Remove wstring from l10n_util. Part 8, the last part....

chrome/browser/chromeos/login/screen_locker.cc

Index: chrome/browser/chromeos/login/screen_locker.cc
===================================================================
--- chrome/browser/chromeos/login/screen_locker.cc	(revision 70736)
+++ chrome/browser/chromeos/login/screen_locker.cc	(working copy)
@@ -759,17 +759,18 @@
   // Don't enable signout button here as we're showing
   // MessageBubble.
 
-  std::wstring msg = l10n_util::GetString(IDS_LOGIN_ERROR_AUTHENTICATING);
+  string16 msg = l10n_util::GetStringUTF16(IDS_LOGIN_ERROR_AUTHENTICATING);
   const std::string error_text = error.GetErrorString();
   if (!error_text.empty())
-    msg += L"\n" + ASCIIToWide(error_text);
+    msg += ASCIIToUTF16("\n") + ASCIIToUTF16(error_text);
 
   InputMethodLibrary* input_method_library =
       CrosLibrary::Get()->GetInputMethodLibrary();
   if (input_method_library->GetNumActiveInputMethods() > 1)
-    msg += L"\n" + l10n_util::GetString(IDS_LOGIN_ERROR_KEYBOARD_SWITCH_HINT);
+    msg += ASCIIToUTF16("\n") +
+        l10n_util::GetStringUTF16(IDS_LOGIN_ERROR_KEYBOARD_SWITCH_HINT);
 
-  ShowErrorBubble(msg, BubbleBorder::BOTTOM_LEFT);
+  ShowErrorBubble(UTF16ToWide(msg), BubbleBorder::BOTTOM_LEFT);
 }
 
 void ScreenLocker::OnLoginSuccess(