Cleanup: Remove unneeded includes of pref_names.h

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

 // Copyright (c) 2010 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 "app/theme_provider.h"
 #include "base/basictypes.h"
 #include "base/scoped_nsobject.h"
 #include "base/string16.h"
 #include "base/string_util.h"
 #include "base/sys_string_conversions.h"
 #include "base/utf_string_conversions.h"
 #include "chrome/browser/bookmarks/bookmark_model.h"
 #import "chrome/browser/ui/cocoa/bookmarks/bookmark_bar_constants.h"
 #import "chrome/browser/ui/cocoa/bookmarks/bookmark_bar_controller.h"
 #import "chrome/browser/ui/cocoa/bookmarks/bookmark_bar_folder_window.h"
 #import "chrome/browser/ui/cocoa/bookmarks/bookmark_bar_unittest_helper.h"
 #import "chrome/browser/ui/cocoa/bookmarks/bookmark_bar_view.h"
 #import "chrome/browser/ui/cocoa/bookmarks/bookmark_button.h"
 #import "chrome/browser/ui/cocoa/bookmarks/bookmark_button_cell.h"
 #import "chrome/browser/ui/cocoa/bookmarks/bookmark_menu.h"
 #include "chrome/browser/ui/cocoa/browser_test_helper.h"
 #import "chrome/browser/ui/cocoa/cocoa_test_helper.h"
 #include "chrome/browser/ui/cocoa/test_event_utils.h"
 #import "chrome/browser/ui/cocoa/view_resizer_pong.h"
-#include "chrome/common/pref_names.h"
 #include "chrome/test/model_test_utils.h"
 #include "testing/gtest/include/gtest/gtest.h"
 #import "testing/gtest_mac.h"
 #include "testing/platform_test.h"
 #import "third_party/ocmock/OCMock/OCMock.h"
 
 // Just like a BookmarkBarController but openURL: is stubbed out.
 @interface BookmarkBarControllerNoOpen : BookmarkBarController {
  @public
   std::vector<GURL> urls_;
@@ skipping 2122 matching lines @@
                              "2f3b ] 4b ");
   actual = model_test_utils::ModelStringFromNode(root);
   EXPECT_EQ(expected, actual);
 
   // Verify that the other bookmark folder can't be deleted.
   BookmarkButton *otherButton = [bar_ otherBookmarksButton];
   EXPECT_FALSE([bar_ canDragBookmarkButtonToTrash:otherButton]);
 }
 
 }  // namespace