[Mac] Reverse tabs in RTL mode

chrome/browser/ui/cocoa/tabs/tab_controller.h

 // 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.
 
 #ifndef CHROME_BROWSER_UI_COCOA_TABS_TAB_CONTROLLER_H_
 #define CHROME_BROWSER_UI_COCOA_TABS_TAB_CONTROLLER_H_
 
 #import <Cocoa/Cocoa.h>
 
 #include <memory>
@@ skipping 31 matching lines @@
 // view, something with state and animation such as a throbber for illustrating
 // progress. The default in the nib is an image view so nothing special is
 // required if that's all you need.
 
 @interface TabController : NSViewController<TabDraggingEventTarget> {
  @private
   base::scoped_nsobject<SpriteView> iconView_;
   base::scoped_nsobject<AlertIndicatorButton> alertIndicatorButton_;
   base::scoped_nsobject<HoverCloseButton> closeButton_;
 
-  NSRect originalIconFrame_;  // frame of iconView_ as loaded from nib
   BOOL isIconShowing_;  // last state of iconView_ in updateVisibility
 
   BOOL pinned_;
   BOOL active_;
   BOOL selected_;
   GURL url_;
   TabLoadingState loadingState_;
   id<TabControllerTarget> target_;  // weak, where actions are sent
   SEL action_;  // selector sent when tab is selected by clicking
   std::unique_ptr<ui::SimpleMenuModel> contextMenuModel_;
@@ skipping 64 matching lines @@
 @end
 
 @interface TabController(TestingAPI)
 - (int)iconCapacity;
 - (BOOL)shouldShowIcon;
 - (BOOL)shouldShowAlertIndicator;
 - (BOOL)shouldShowCloseButton;
 @end  // TabController(TestingAPI)
 
 #endif  // CHROME_BROWSER_UI_COCOA_TABS_TAB_CONTROLLER_H_