bookmarks: Move BookmarkNode into 'bookmarks' namespace.

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

 // 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>
 
 #import "base/mac/scoped_nsobject.h"
 #import "chrome/browser/ui/cocoa/bookmarks/bookmark_tree_browser_cell.h"
 #include "components/bookmarks/browser/bookmark_model.h"
 #include "testing/platform_test.h"
 
+using bookmarks::BookmarkNode;
+
 class BookmarkTreeBrowserCellTest : public PlatformTest {
  public:
   BookmarkTreeBrowserCellTest() {
     // Set up our mocks.
     GURL gurl;
     bookmarkNodeMock_.reset(new BookmarkNode(gurl));
     matrixMock_.reset([[NSMatrix alloc] init]);
     targetMock_.reset([[NSObject alloc] init]);
   }
 
@@ skipping 12 matching lines @@
 
   NSMatrix* testMatrix = [cell matrix];
   EXPECT_EQ(testMatrix, matrixMock_.get());
   id testTarget = [cell target];
   EXPECT_EQ(testTarget, targetMock_.get());
   SEL testAction = [cell action];
   EXPECT_EQ(testAction, @selector(mockAction:));
   const BookmarkNode* testBookmarkNode = [cell bookmarkNode];
   EXPECT_EQ(testBookmarkNode, bookmarkNodeMock_.get());
 }