Cleanup AdjustStringForLocaleDirection()

views/controls/button/native_button.cc

Index: views/controls/button/native_button.cc
diff --git a/views/controls/button/native_button.cc b/views/controls/button/native_button.cc
index 89dae9c24d70f60f59237c88c4a67ee5f1ec93cc..e1693d35a97b370c50c20a9ad8294296bd50d384 100644
--- a/views/controls/button/native_button.cc
+++ b/views/controls/button/native_button.cc
@@ -74,9 +74,7 @@ void NativeButton::SetLabel(const std::wstring& label) {
   // In order to overcome this problem, we mark the localized Hebrew strings as
   // RTL strings explicitly (using the appropriate Unicode formatting) so that
   // Windows displays the text correctly regardless of the HWND hierarchy.
-  std::wstring localized_label;
-  if (base::i18n::AdjustStringForLocaleDirection(label_, &localized_label))
-    label_ = localized_label;
+  base::i18n::AdjustStringForLocaleDirection(&label_);
 
   if (native_wrapper_)
     native_wrapper_->UpdateLabel();