Factor iOS native image loading into a utility function.

ios/chrome/browser/ui/tools_menu/tools_menu_view_controller.mm

 // Copyright 2014 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/tools_menu/tools_menu_view_controller.h"
 
 #include <stdint.h>
 
 #include "base/ios/ios_util.h"
 #import "base/ios/weak_nsobject.h"
@@ skipping 17 matching lines @@
 #import "ios/chrome/browser/ui/tools_menu/tools_popup_controller.h"
 #include "ios/chrome/browser/ui/ui_util.h"
 #import "ios/chrome/browser/ui/uikit_ui_util.h"
 #import "ios/chrome/common/material_timing.h"
 #include "ios/chrome/grit/ios_strings.h"
 #include "ios/public/provider/chrome/browser/chrome_browser_provider.h"
 #import "ios/public/provider/chrome/browser/user_feedback/user_feedback_provider.h"
 #import "ios/third_party/material_components_ios/src/components/Ink/src/MaterialInk.h"
 #include "ui/base/l10n/l10n_util.h"
 #include "ui/base/l10n/l10n_util_mac.h"
-#include "ui/base/resource/resource_bundle.h"
 
 using ios::material::TimingFunction;
 
 NSString* const kToolsMenuNewTabId = @"kToolsMenuNewTabId";
 NSString* const kToolsMenuNewIncognitoTabId = @"kToolsMenuNewIncognitoTabId";
 NSString* const kToolsMenuCloseAllTabsId = @"kToolsMenuCloseAllTabsId";
 NSString* const kToolsMenuCloseAllIncognitoTabsId =
     @"kToolsMenuCloseAllIncognitoTabsId";
 NSString* const kToolsMenuBookmarksId = @"kToolsMenuBookmarksId";
 NSString* const kToolsMenuReadingListId = @"kToolsMenuReadingListId";
@@ skipping 285 matching lines @@
 
   [contentView addSubview:_starredButton];
   [contentView addSubview:_starButton];
   [contentView addSubview:_stopButton];
   [contentView addSubview:_reloadButton];
   [contentView addSubview:_shareButton];
 
   [self addConstraints];
 }
 
-- (UIImage*)imageForImageId:(int)imageId reversed:(BOOL)reversed {
-  if (imageId == 0) {
-    return nil;
-  }
-  ResourceBundle& rb = ResourceBundle::GetSharedInstance();
-  gfx::Image image = rb.GetNativeImageNamed(imageId);
-  if (reversed) {
-    return [image.ToUIImage() imageFlippedForRightToLeftLayoutDirection];
-  } else {
-    return image.ToUIImage();
-  }
-}
-
 - (ToolsMenuButton*)newButtonForImageIds:(int[2][3])imageIds
                                commandID:(int)commandID
                     accessibilityLabelID:(int)labelID
                           automationName:(NSString*)name {
   return [self newButtonForImageIds:imageIds
                           commandID:commandID
                accessibilityLabelID:labelID
                      automationName:name
                       reverseForRTL:NO];
 }
 
 - (ToolsMenuButton*)newButtonForImageIds:(int[2][3])imageIds
                                commandID:(int)commandID
                     accessibilityLabelID:(int)labelID
                           automationName:(NSString*)name
                            reverseForRTL:(BOOL)reverseForRTL {
   ToolsMenuButton* button = [[ToolsMenuButton alloc] initWithFrame:CGRectZero];
   [button setTranslatesAutoresizingMaskIntoConstraints:NO];
-  BOOL reverseImage = reverseForRTL && UseRTLLayout();
 
-  [button setImage:[self imageForImageId:imageIds[0][0] reversed:reverseImage]
+  [button setImage:NativeReversableImage(imageIds[0][0], reverseForRTL)
           forState:UIControlStateNormal];
   [[button imageView] setContentMode:UIViewContentModeCenter];
   [button setBackgroundColor:[self backgroundColor]];
   [button setTag:commandID];
   [button setOpaque:YES];
 
   SetA11yLabelAndUiAutomationName(button, labelID, name);
 
-  UIImage* pressedImage =
-      [self imageForImageId:imageIds[0][1] reversed:reverseImage];
+  UIImage* pressedImage = NativeReversableImage(imageIds[0][1], reverseForRTL);
   if (pressedImage) {
     [button setImage:pressedImage forState:UIControlStateHighlighted];
   }
 
-  UIImage* disabledImage =
-      [self imageForImageId:imageIds[0][2] reversed:reverseImage];
+  UIImage* disabledImage = NativeReversableImage(imageIds[0][2], reverseForRTL);
   if (disabledImage) {
     [button setImage:disabledImage forState:UIControlStateDisabled];
   }
 
   return button;
 }
 
 - (void)addConstraints {
   UIView* contentView = [self contentView];
 
@@ skipping 545 matching lines @@
 
 - (void)unreadCountChanged:(NSInteger)unreadCount {
   [[self readingListCell] updateBadgeCount:unreadCount animated:YES];
 }
 
 - (void)unseenStateChanged:(BOOL)unseenItemsExist {
   [[self readingListCell] updateSeenState:unseenItemsExist animated:YES];
 }
 
 @end