fix spelling of comments

chrome/browser/ui/cocoa/bookmarks/bookmark_button.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.
 
 #import <Cocoa/Cocoa.h>
 #include <vector>
 #import "chrome/browser/ui/cocoa/draggable_button.h"
 #include "webkit/glue/window_open_disposition.h"
 
 @class BookmarkBarFolderController;
@@ skipping 136 matching lines @@
 
 // Open all of the nodes for the given node with disposition.
 - (void)openAll:(const BookmarkNode*)node
     disposition:(WindowOpenDisposition)disposition;
 
 // There are several operations which may affect the contents of a bookmark
 // button controller after it has been created, primary of which are
 // cut/paste/delete and drag/drop. Such changes may involve coordinating
 // the bookmark button contents of two controllers (such as when a bookmark is
 // dragged from one folder to another).  The bookmark bar controller
-// coordinates in response to notifications propogated by the bookmark model
+// coordinates in response to notifications propagated by the bookmark model
 // through BookmarkBarBridge calls. The following three functions are
 // implemented by the controllers and are dispatched by the bookmark bar
 // controller in response to notifications coming in from the BookmarkBarBridge.
 
 // Add a button for the given node to the bar or folder menu. This is safe
 // to call when a folder menu window is open as that window will be updated.
 // And index of -1 means to append to the end (bottom).
 - (void)addButtonForNode:(const BookmarkNode*)node
                  atIndex:(NSInteger)buttonIndex;
 
@@ skipping 92 matching lines @@
 
 // Key for userInfo dict of a kPulseBookmarkButtonNotification.
 // Value is a [NSValue valueWithPointer:]; pointer is a (const BookmarkNode*).
 extern NSString* const kBookmarkKey;
 
 // Key for userInfo dict of a kPulseBookmarkButtonNotification.
 // Value is a [NSNumber numberWithBool:] to turn pulsing on or off.
 extern NSString* const kBookmarkPulseFlagKey;
 
 };