Convert GetDisplayStringInLTRDirectionality from wstring to string16.

views/controls/label.cc

Index: views/controls/label.cc
diff --git a/views/controls/label.cc b/views/controls/label.cc
index 7953d183a12f4c7051fb93e2495365658f9149a8..c4f8b227030050b11bbd1c312932be141c8b9c7b 100644
--- a/views/controls/label.cc
+++ b/views/controls/label.cc
@@ -439,7 +439,8 @@ void Label::CalculateDrawStringParams(std::wstring* paint_text,
     // characters. We use the locale settings because an URL is always treated
     // as an LTR string, even if its containing view does not use an RTL UI
     // layout.
-    base::i18n::GetDisplayStringInLTRDirectionality(paint_text);
+    *paint_text = UTF16ToWide(base::i18n::GetDisplayStringInLTRDirectionality(
+        WideToUTF16(*paint_text)));
   } else if (elide_in_middle_) {
     *paint_text = gfx::ElideText(text_, font_, width(), true);
   } else {