bookmarks: Move BookmarkNode into 'bookmarks' namespace.

chrome/browser/ui/cocoa/bookmarks/bookmark_model_observer_for_cocoa.mm

 // 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.
 
 #include "chrome/browser/ui/cocoa/bookmarks/bookmark_model_observer_for_cocoa.h"
 
 using bookmarks::BookmarkModel;
+using bookmarks::BookmarkNode;
 
 BookmarkModelObserverForCocoa::BookmarkModelObserverForCocoa(
     BookmarkModel* model,
     ChangeCallback callback) {
   DCHECK(model);
   callback_.reset(Block_copy(callback));
   model_ = model;
   model_->AddObserver(this);
 }
 
@@ skipping 46 matching lines @@
 void BookmarkModelObserverForCocoa::BookmarkNodeChanged(
     BookmarkModel* model,
     const BookmarkNode* node) {
   if (!nodes_.size() || nodes_.find(node) != nodes_.end())
     Notify(NO);
 }
 
 void BookmarkModelObserverForCocoa::Notify(BOOL deleted) {
   callback_.get()(deleted);
 }