Add missing include guards in Cocoa code.

chrome/browser/ui/cocoa/bookmarks/bookmark_menu_bridge.h

 // Copyright (c) 2011 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.
 
-// C++ controller for the bookmark menu; one per AppController (which
-// means there is only one).  When bookmarks are changed, this class
-// takes care of updating Cocoa bookmark menus.  This is not named
-// BookmarkMenuController to help avoid confusion between languages.
-// This class needs to be C++, not ObjC, since it derives from
-// BookmarkModelObserver.
-//
-// Most Chromium Cocoa menu items are static from a nib (e.g. New
-// Tab), but may be enabled/disabled under certain circumstances
-// (e.g. Cut and Paste).  In addition, most Cocoa menu items have
-// firstResponder: as a target.  Unusually, bookmark menu items are
-// created dynamically.  They also have a target of
-// BookmarkMenuCocoaController instead of firstResponder.
-// See BookmarkMenuBridge::AddNodeToMenu()).
-
 #ifndef CHROME_BROWSER_UI_COCOA_BOOKMARKS_BOOKMARK_MENU_BRIDGE_H_
 #define CHROME_BROWSER_UI_COCOA_BOOKMARKS_BOOKMARK_MENU_BRIDGE_H_
 
 #include <map>
 
 #include "base/mac/scoped_nsobject.h"
 #import "chrome/browser/ui/cocoa/main_menu_item.h"
 #include "components/bookmarks/browser/bookmark_model_observer.h"
 
 class Profile;
 @class NSImage;
 @class NSMenu;
 @class NSMenuItem;
 @class BookmarkMenuCocoaController;
 
 namespace bookmarks {
 class BookmarkNode;
 }
 
+// C++ controller for the bookmark menu; one per AppController (which
+// means there is only one).  When bookmarks are changed, this class
+// takes care of updating Cocoa bookmark menus.  This is not named
+// BookmarkMenuController to help avoid confusion between languages.
+// This class needs to be C++, not ObjC, since it derives from
+// BookmarkModelObserver.
+//
+// Most Chromium Cocoa menu items are static from a nib (e.g. New
+// Tab), but may be enabled/disabled under certain circumstances
+// (e.g. Cut and Paste).  In addition, most Cocoa menu items have
+// firstResponder: as a target.  Unusually, bookmark menu items are
+// created dynamically.  They also have a target of
+// BookmarkMenuCocoaController instead of firstResponder.
+// See BookmarkMenuBridge::AddNodeToMenu()).
 class BookmarkMenuBridge : public bookmarks::BookmarkModelObserver,
                            public MainMenuItem {
  public:
   BookmarkMenuBridge(Profile* profile, NSMenu* menu);
   ~BookmarkMenuBridge() override;
 
   // bookmarks::BookmarkModelObserver:
   void BookmarkModelLoaded(bookmarks::BookmarkModel* model,
                            bool ids_reassigned) override;
   void BookmarkModelBeingDeleted(bookmarks::BookmarkModel* model) override;
@@ skipping 101 matching lines @@
 
   // The folder image so we can use one copy for all.
   base::scoped_nsobject<NSImage> folder_image_;
 
   // In order to appropriately update items in the bookmark menu, without
   // forcing a rebuild, map the model's nodes to menu items.
   std::map<const bookmarks::BookmarkNode*, NSMenuItem*> bookmark_nodes_;
 };
 
 #endif  // CHROME_BROWSER_UI_COCOA_BOOKMARKS_BOOKMARK_MENU_BRIDGE_H_