Remove DialogDelegate::UseNewStyle and unused code.

ui/views/widget/widget.cc

 // Copyright (c) 2012 The Chromium Authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 #include "ui/views/widget/widget.h"
 
 #include "base/debug/trace_event.h"
 #include "base/logging.h"
 #include "base/message_loop/message_loop.h"
 #include "base/strings/utf_string_conversions.h"
@@ skipping 234 matching lines @@
   Widget::InitParams params;
   params.delegate = delegate;
   params.context = context;
   params.bounds = bounds;
   widget->Init(params);
   return widget;
 }
 
 // static
 Widget* Widget::CreateWindowAsFramelessChild(WidgetDelegate* widget_delegate,
-                                             gfx::NativeView parent,
-                                             gfx::NativeView new_style_parent) {
+                                             gfx::NativeView parent) {
   views::Widget* widget = new views::Widget;
 
   views::Widget::InitParams params;
   params.delegate = widget_delegate;
   params.child = true;
-  if (views::DialogDelegate::UseNewStyle()) {
-    params.parent = new_style_parent;
-    params.remove_standard_frame = true;
+  params.parent = parent;
+  params.remove_standard_frame = true;
 #if defined(USE_AURA)
-    params.opacity = views::Widget::InitParams::TRANSLUCENT_WINDOW;
+  params.opacity = views::Widget::InitParams::TRANSLUCENT_WINDOW;
 #endif
-  } else {
-    params.parent = parent;
-  }
 
   widget->Init(params);
-
   return widget;
 }
 
 // static
 Widget* Widget::GetWidgetForNativeView(gfx::NativeView native_view) {
   internal::NativeWidgetPrivate* native_widget =
       internal::NativeWidgetPrivate::GetNativeWidgetForNativeView(native_view);
   return native_widget ? native_widget->GetWidget() : NULL;
 }
 
@@ skipping 1146 matching lines @@
 
 ////////////////////////////////////////////////////////////////////////////////
 // internal::NativeWidgetPrivate, NativeWidget implementation:
 
 internal::NativeWidgetPrivate* NativeWidgetPrivate::AsNativeWidgetPrivate() {
   return this;
 }
 
 }  // namespace internal
 }  // namespace views