Add Windows commandline switch --enable-views-textfield.

ui/views/widget/native_widget_win.cc

Index: ui/views/widget/native_widget_win.cc
diff --git a/ui/views/widget/native_widget_win.cc b/ui/views/widget/native_widget_win.cc
index a9499f3467f34035d046443bdd2739386e7adf2b..ad2874adf909c11446ff730fc367fe072aaa1000 100644
--- a/ui/views/widget/native_widget_win.cc
+++ b/ui/views/widget/native_widget_win.cc
@@ -668,13 +668,9 @@ bool NativeWidgetWin::HasCapture() const {
 }
 
 InputMethod* NativeWidgetWin::CreateInputMethod() {
-#if defined(USE_AURA)
   InputMethod* input_method = new InputMethodWin(this);
   input_method->Init(GetWidget());
   return input_method;
-#else
-  return NULL;
-#endif
 }
 
 void NativeWidgetWin::CenterWindow(const gfx::Size& size) {