Use delegate protocols present in the 10.6 SDK

chrome/browser/cocoa/bookmark_bubble_controller.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.
 
 #import <Cocoa/Cocoa.h>
+#import "base/cocoa_protocols_mac.h"
 #include "base/scoped_nsobject.h"
 
 class BookmarkModel;
 class BookmarkNode;
 @class BookmarkBubbleController;
 
 // Protocol for a BookmarkBubbleController's (BBC's) delegate.
 @protocol BookmarkBubbleControllerDelegate
 
 // The bubble asks the delegate to perform an edit when needed.
 - (void)editBookmarkNode:(const BookmarkNode*)node;
 
 // The bubble tells its delegate when it's done and can be deallocated.
 - (void)doneWithBubbleController:(BookmarkBubbleController*)controller;
 
 @end
 
 // Controller for the bookmark bubble.  The bookmark bubble is a
 // bubble that pops up when clicking on the STAR next to the URL to
 // add or remove it as a bookmark.  This bubble allows for editing of
 // the bookmark in various ways (name, folder, etc.)
 //
 // The bubble is stored in a nib as a view, not as a window, so we can
 // make it an actual bubble.  There is no nib-rific way to encode a
 // NSBorderlessWindowMask NSWindow, and the style of an NSWindow can't
 // be set other than init time.  To deal, we create the NSWindow
 // programatically, but encode the view in a nib.  Thus,
 // BookmarkBubbleController is an NSViewController, not an
 // NSWindowController.
-@interface BookmarkBubbleController : NSViewController {
+@interface BookmarkBubbleController : NSViewController<NSWindowDelegate> {
  @private
   // Unexpected for this controller, perhaps, but our window does NOT
   // come from a nib.
   scoped_nsobject<NSWindow> window_;
 
   id<BookmarkBubbleControllerDelegate> delegate_;  // weak like other delegates
   NSWindow* parentWindow_;  // weak
   NSPoint topLeftForBubble_;
 
   // Both weak; owned by the current browser's profile
@@ skipping 43 matching lines @@
 - (void)updateBookmarkNode;
 - (void)setTitle:(NSString *)title parentFolder:(NSString*)folder;
 - (NSString*)chooseAnotherFolderString;
 @end
 
 // Also private but I need to declare them specially for @synthesize to work.
 @interface BookmarkBubbleController ()
 @property (readonly) id delegate;
 @property (readonly) NSComboBox* folderComboBox;
 @end