Remove new dialog style command-line flags, etc.

ui/views/controls/textfield/textfield.cc

Index: ui/views/controls/textfield/textfield.cc
diff --git a/ui/views/controls/textfield/textfield.cc b/ui/views/controls/textfield/textfield.cc
index 4787e4e4af6281a38cf26fa9327643a4eb52d391..e358657cb135e902972eaf5d2f5b19cbef838c45 100644
--- a/ui/views/controls/textfield/textfield.cc
+++ b/ui/views/controls/textfield/textfield.cc
@@ -16,7 +16,6 @@
 #include "ui/base/range/range.h"
 #include "ui/base/resource/resource_bundle.h"
 #include "ui/base/ui_base_switches.h"
-#include "ui/base/ui_base_switches_util.h"
 #include "ui/gfx/insets.h"
 #include "ui/gfx/selection_model.h"
 #include "ui/native_theme/native_theme.h"
@@ -62,9 +61,6 @@ bool Textfield::IsViewsTextfieldEnabled() {
     return false;
   if (command_line->HasSwitch(switches::kEnableViewsTextfield))
     return true;
-  // The new dialog style cannot host native Windows textfield controls.
-  if (switches::IsNewDialogStyleEnabled())
-    return true;
   // Avoid native Windows Textfields if the RichEdit library is not available.
   static const HMODULE loaded_msftedit_dll = LoadLibrary(L"msftedit.dll");
   if (!loaded_msftedit_dll)