Cleanup: Remove unused ui::ResourceBundle::ImageRTL

ui/base/resource/resource_bundle_win.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/base/resource/resource_bundle_win.h"
 
 #include "base/logging.h"
 #include "base/path_service.h"
 #include "base/strings/utf_string_conversions.h"
 #include "skia/ext/image_operations.h"
@@ skipping 19 matching lines @@
 
 }  // namespace
 
 void ResourceBundle::LoadCommonResources() {
   // As a convenience, add the current resource module as a data packs.
   data_packs_.push_back(new ResourceDataDLL(GetCurrentResourceDLL()));
 
   LoadChromeResources();
 }
 
-gfx::Image& ResourceBundle::GetNativeImageNamed(int resource_id, ImageRTL rtl) {
-  // Flipped image is not used on Windows.
-  DCHECK_EQ(rtl, RTL_DISABLED);
-
+gfx::Image& ResourceBundle::GetNativeImageNamed(int resource_id) {
   // Windows only uses SkBitmap for gfx::Image, so this is the same as
   // GetImageNamed.
   return GetImageNamed(resource_id);
 }
 
 void SetResourcesDataDLL(HINSTANCE handle) {
   resources_data_dll = handle;
 }
 
 HICON LoadThemeIconFromResourcesDataDLL(int icon_id) {
   return ::LoadIcon(GetCurrentResourceDLL(), MAKEINTRESOURCE(icon_id));
 }
 
 }  // namespace ui;