Mac/clang: Possibly contentious changes.

chrome/browser/cocoa/bookmark_tree_browser_cell.h

 // Copyright (c) 2009 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_COCOA_BOOKMARK_TREE_BROWSER_CELL_H_
 #define CHROME_BROWSER_COCOA_BOOKMARK_TREE_BROWSER_CELL_H_
 
 #import <Cocoa/Cocoa.h>
 
 class BookmarkNode;
 
 // Provides a custom cell as used in the BookmarkEditor.xib's folder tree
 // browser view.  This cell customization adds target and action support
 // not provided by the NSBrowserCell as well as contextual information
 // identifying the bookmark node being edited and the column matrix
 // control in which is contained the cell.
 @interface BookmarkTreeBrowserCell : NSBrowserCell {
  @private
   const BookmarkNode* bookmarkNode_;  // weak
   NSMatrix* matrix_;  // weak
   id target_;  // weak
   SEL action_;
 }
 
-@property (assign) NSMatrix* matrix;
-@property (assign) id target;
-@property (assign) SEL action;
+@property (nonatomic, assign) NSMatrix* matrix;
+@property (nonatomic, assign) id target;
+@property (nonatomic, assign) SEL action;
 
 - (const BookmarkNode*)bookmarkNode;
 - (void)setBookmarkNode:(const BookmarkNode*)bookmarkNode;
 
 @end
 
 #endif // CHROME_BROWSER_COCOA_BOOKMARK_TREE_BROWSER_CELL_H_