Factor iOS native image loading into a utility function.

ios/chrome/browser/ui/sad_tab/sad_tab_view.mm

 // Copyright 2015 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.
 
 #import "ios/chrome/browser/ui/sad_tab/sad_tab_view.h"
 
 #import "base/ios/weak_nsobject.h"
 #include "base/logging.h"
 #include "base/mac/scoped_block.h"
 #include "base/mac/scoped_nsobject.h"
 #include "base/strings/sys_string_conversions.h"
 #include "components/grit/components_scaled_resources.h"
 #include "components/strings/grit/components_strings.h"
 #include "ios/chrome/browser/chrome_url_constants.h"
 #import "ios/chrome/browser/ui/colors/MDCPalette+CrAdditions.h"
 #import "ios/chrome/browser/ui/commands/UIKit+ChromeExecuteCommand.h"
 #import "ios/chrome/browser/ui/commands/open_url_command.h"
 #include "ios/chrome/browser/ui/rtl_geometry.h"
 #include "ios/chrome/browser/ui/ui_util.h"
+#import "ios/chrome/browser/ui/uikit_ui_util.h"
 #import "ios/chrome/browser/ui/url_loader.h"
 #import "ios/chrome/browser/ui/util/label_link_controller.h"
 #import "ios/third_party/material_components_ios/src/components/Buttons/src/MaterialButtons.h"
 #import "ios/third_party/material_components_ios/src/components/Palettes/src/MaterialPalettes.h"
 #import "ios/third_party/material_roboto_font_loader_ios/src/src/MaterialRobotoFontLoader.h"
 #include "ios/web/public/interstitials/web_interstitial.h"
 #include "ios/web/public/web_state/web_state.h"
 #import "net/base/mac/url_conversions.h"
 #include "ui/base/l10n/l10n_util.h"
-#include "ui/base/resource/resource_bundle.h"
-#include "ui/gfx/image/image.h"
 
 namespace {
 // Color constants.
 const CGFloat kBackgroundColorBrightness = 247.0f / 255.0f;
 const CGFloat kTitleLabelTextColorBrightness = 22.0f / 255.0f;
 const CGFloat kMessageLabelTextColorBrightness = 80.0f / 255.0f;
 // Layout constants.
 const UIEdgeInsets kLayoutInsets = {24.0f, 24.0f, 24.0f, 24.0f};
 const CGFloat kLayoutBoundsMaxWidth = 600.0f;
 const CGFloat kContainerViewLandscapeTopPadding = 22.0f;
@@ skipping 89 matching lines @@
 - (UIView*)containerView {
   if (!_containerView) {
     _containerView.reset([[UIView alloc] initWithFrame:CGRectZero]);
     [_containerView setBackgroundColor:self.backgroundColor];
   }
   return _containerView;
 }
 
 - (UIImageView*)imageView {
   if (!_imageView) {
-    ui::ResourceBundle& resourceBundle =
-        ui::ResourceBundle::GetSharedInstance();
-    UIImage* image =
-        resourceBundle.GetNativeImageNamed(IDR_CRASH_SAD_TAB).ToUIImage();
-    _imageView.reset([[UIImageView alloc] initWithImage:image]);
+    _imageView.reset(
+        [[UIImageView alloc] initWithImage:NativeImage(IDR_CRASH_SAD_TAB)]);
     [_imageView setBackgroundColor:self.backgroundColor];
   }
   return _imageView.get();
 }
 
 - (UILabel*)titleLabel {
   if (!_titleLabel) {
     _titleLabel.reset([[UILabel alloc] initWithFrame:CGRectZero]);
     [_titleLabel setBackgroundColor:self.backgroundColor];
     [_titleLabel setText:base::SysUTF8ToNSString(
@@ skipping 237 matching lines @@
 
 - (void)handleReloadButtonTapped {
   _reloadHandler.get()();
 }
 
 + (UIColor*)sadTabBackgroundColor {
   return [UIColor colorWithWhite:kBackgroundColorBrightness alpha:1.0];
 }
 
 @end