Cleanup a few FirstRun methods that are only applicable to Windows.

chrome/browser/first_run_gtk.cc

 // 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.
 
 #include "chrome/browser/first_run.h"
 
 #include "chrome/browser/gtk/first_run_dialog.h"
 
 bool OpenFirstRunDialog(Profile* profile, bool homepage_defined,
                         int import_items,
                         int dont_import_items,
                         ProcessSingleton* process_singleton) {
-  // TODO(port): Use process_singleton to make sure Chrome can not be started
-  // while this process is active.
   return FirstRunDialog::Show(profile, process_singleton);
 }
-
-bool FirstRun::ProcessMasterPreferences(const FilePath& user_data_dir,
-                                        const FilePath& master_prefs_path,
-                                        std::vector<std::wstring>* new_tabs,
-                                        int* ping_delay,
-                                        bool* homepage_defined,
-                                        int* do_import_items,
-                                        int* dont_import_items) {
-  // http://code.google.com/p/chromium/issues/detail?id=11971
-  return true;
-}
-
-// static
-int FirstRun::ImportNow(Profile* profile, const CommandLine& cmdline) {
-  // http://code.google.com/p/chromium/issues/detail?id=11971
-  return 0;
-}