Cleanup: Remove unneeded headers from app/

chrome/browser/language_order_table_model.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/language_order_table_model.h"
 
 #include <set>
 
 #include "app/l10n_util.h"
+#include "app/table_model_observer.h"
 #include "base/utf_string_conversions.h"
 #include "chrome/browser/browser_process.h"
 
 LanguageOrderTableModel::LanguageOrderTableModel()
     : observer_(NULL) {
 }
 
 void LanguageOrderTableModel::SetAcceptLanguagesString(
     const std::string& language_list) {
   std::vector<std::string> languages_vector;
@@ skipping 95 matching lines @@
 std::string LanguageOrderTableModel::VectorToList(
     const std::vector<std::string>& vector)  {
   std::string list;
   for (int i = 0 ; i < static_cast<int>(vector.size()) ; i++) {
     list += vector.at(i);
     if (i != static_cast<int>(vector.size()) - 1)
       list += ',';
   }
   return list;
 }