Nukes USE_AURA ifdefs from views

ui/views/controls/webview/unhandled_keyboard_event_handler_win.cc

Index: ui/views/controls/webview/unhandled_keyboard_event_handler_win.cc
diff --git a/ui/views/controls/webview/unhandled_keyboard_event_handler_win.cc b/ui/views/controls/webview/unhandled_keyboard_event_handler_win.cc
index c1148c74e447f701a3c0d0066e99c2830d20742c..463ef7e3a05bec59b0ce3ca1aa947a4281c01b1b 100644
--- a/ui/views/controls/webview/unhandled_keyboard_event_handler_win.cc
+++ b/ui/views/controls/webview/unhandled_keyboard_event_handler_win.cc
@@ -57,13 +57,9 @@ void UnhandledKeyboardEventHandler::HandleKeyboardEvent(
 
   // Any unhandled keyboard/character messages should be defproced.
   // This allows stuff like F10, etc to work correctly.
-#if defined(USE_AURA)
   if (!event.os_event)
     return;
   const MSG& message(event.os_event->native_event());
-#else
-  const MSG& message(event.os_event);
-#endif
   DefWindowProc(message.hwnd, message.message, message.wParam, message.lParam);
 }