[Mac] Remove more dead code from bookmark bar controller

chrome/browser/ui/cocoa/bookmarks/bookmark_bar_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_BOOKMARKS_BOOKMARK_BAR_CONTROLLER_H_
 #define CHROME_BROWSER_UI_COCOA_BOOKMARKS_BOOKMARK_BAR_CONTROLLER_H_
 
 #import <Cocoa/Cocoa.h>
 #include <stdint.h>
 
@@ skipping 165 matching lines @@
   BOOL isAnimationRunning_;
 
   Browser* browser_;              // weak; owned by its window
   bookmarks::BookmarkModel* bookmarkModel_;  // weak; part of the profile owned
                                              // by the top-level Browser object.
   bookmarks::ManagedBookmarkService* managedBookmarkService_;
 
   // Our initial view width, which is applied in awakeFromNib.
   CGFloat initialWidth_;
 
-  // BookmarkNodes have a 64bit id.  NSMenuItems have a 32bit tag used
-  // to represent the bookmark node they refer to.  This map provides
-  // a mapping from one to the other, so we can properly identify the
-  // node from the item.  When adding items in, we start with seedId_.
-  int32_t seedId_;
-  std::map<int32_t, int64_t> menuTagMap_;
-
   // Our bookmark buttons, ordered from L-->R.
   base::scoped_nsobject<NSMutableArray> buttons_;
 
   // The folder image so we can use one copy for all buttons
   base::scoped_nsobject<NSImage> folderImage_;
 
   // The Material Design Incognito folder image so we can use one copy for all
   // buttons
   base::scoped_nsobject<NSImage> folderImageWhite_;
 
@@ skipping 242 matching lines @@
 - (id)folderTarget;
 - (int)displayedButtonCount;
 - (void)openURL:(GURL)url disposition:(WindowOpenDisposition)disposition;
 - (void)clearBookmarkBar;
 - (BookmarkButtonCell*)cellForBookmarkNode:(const bookmarks::BookmarkNode*)node;
 - (BookmarkButtonCell*)cellForCustomButtonWithText:(NSString*)text
                                              image:(NSImage*)image;
 - (NSRect)frameForBookmarkButtonFromCell:(NSCell*)cell xOffset:(int*)xOffset;
 - (void)checkForBookmarkButtonGrowth:(NSButton*)button;
 - (void)frameDidChange;
-- (int64_t)nodeIdFromMenuTag:(int32_t)tag;
-- (int32_t)menuTagFromNodeId:(int64_t)menuid;
 - (void)updateTheme:(const ui::ThemeProvider*)themeProvider;
 - (BookmarkButton*)buttonForDroppingOnAtPoint:(NSPoint)point;
 - (BOOL)isEventAnExitEvent:(NSEvent*)event;
 - (BOOL)shrinkOrHideView:(NSView*)view forMaxX:(CGFloat)maxViewX;
 - (void)unhighlightBookmark:(const bookmarks::BookmarkNode*)node;
 
 @end
 
 #endif  // CHROME_BROWSER_UI_COCOA_BOOKMARKS_BOOKMARK_BAR_CONTROLLER_H_