Remove wstring from views. Part 3: Switch accessibility strings to string16....

views/controls/button/button.cc

Index: views/controls/button/button.cc
===================================================================
--- views/controls/button/button.cc	(revision 71358)
+++ views/controls/button/button.cc	(working copy)
@@ -33,8 +33,8 @@
   return true;
 }
 
-std::wstring Button::GetAccessibleKeyboardShortcut() {
-  return UTF16ToWideHack(accessible_shortcut_);
+string16 Button::GetAccessibleKeyboardShortcut() {
+  return accessible_shortcut_;
 }
 
 AccessibilityTypes::Role Button::GetAccessibleRole() {