Cleanup: Remove unused ui::ResourceBundle::ImageRTL

ui/base/resource/resource_bundle_ios.mm

 // Copyright 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.h"
 
 #import <QuartzCore/QuartzCore.h>
 #import <UIKit/UIKit.h>
 
 #include "base/files/file_path.h"
@@ skipping 71 matching lines @@
   // Don't try to load empty values or values that are not absolute paths.
   if (locale_file_path.empty() || !locale_file_path.IsAbsolute())
     return base::FilePath();
 
   if (test_file_exists && !base::PathExists(locale_file_path))
     return base::FilePath();
 
   return locale_file_path;
 }
 
-gfx::Image& ResourceBundle::GetNativeImageNamed(int resource_id, ImageRTL rtl) {
-  // Flipped images are not used on iOS.
-  DCHECK_EQ(rtl, RTL_DISABLED);
-
+gfx::Image& ResourceBundle::GetNativeImageNamed(int resource_id) {
   // Check to see if the image is already in the cache.
   {
     base::AutoLock lock(*images_and_fonts_lock_);
     ImageMap::iterator found = images_.find(resource_id);
     if (found != images_.end()) {
       return found->second;
     }
   }
 
   gfx::Image image;
   if (delegate_)
-    image = delegate_->GetNativeImageNamed(resource_id, rtl);
+    image = delegate_->GetNativeImageNamed(resource_id);
 
   if (image.IsEmpty()) {
     // Load the raw data from the resource pack at the current supported scale
     // factor.  This code assumes that only one of the possible scale factors is
     // supported at runtime, based on the device resolution.
     ui::ScaleFactor scale_factor = GetMaxScaleFactor();
 
     scoped_refptr<base::RefCountedStaticMemory> data(
         LoadDataResourceBytesForScale(resource_id, scale_factor));
 
@@ skipping 55 matching lines @@
 
   // Another thread raced the load and has already cached the image.
   if (images_.count(resource_id))
     return images_[resource_id];
 
   images_[resource_id] = image;
   return images_[resource_id];
 }
 
 }  // namespace ui