Cleanup: Remove unneeded includes of pref_names.h

chrome/test/live_sync/multiple_client_live_preferences_sync_test.cc

 // 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.
 
 #include "base/scoped_ptr.h"
 #include "base/string_util.h"
+#include "chrome/browser/prefs/scoped_pref_update.h"
+#include "chrome/common/pref_names.h"
 #include "chrome/test/live_sync/live_preferences_sync_test.h"
-#include "chrome/browser/prefs/scoped_pref_update.h"
 
 IN_PROC_BROWSER_TEST_F(MultipleClientLivePreferencesSyncTest, Sanity) {
   ASSERT_TRUE(SetupSync()) << "SetupSync() failed.";
   scoped_array<ListValue*> client_urls(new ListValue*[num_clients()]);
   for (int i = 0; i < num_clients(); ++i) {
     client_urls[i] = GetPrefs(i)->GetMutableList(
         prefs::kURLsToRestoreOnStartup);
   }
   for (int i = 0; i < num_clients(); ++i) {
     client_urls[i]->Append(Value::CreateStringValue(StringPrintf(
         "http://www.google.com/%d", i)));
     ScopedPrefUpdate update(GetPrefs(i), prefs::kURLsToRestoreOnStartup);
   }
   for (int i = 0; i < num_clients(); ++i) {
     GetClient(i)->AwaitGroupSyncCycleCompletion(clients());
   }
   for (int i = 1; i < num_clients(); ++i) {
     ASSERT_TRUE(GetPrefs(0)->GetMutableList(prefs::kURLsToRestoreOnStartup)->
         Equals(GetPrefs(i)->GetMutableList(prefs::kURLsToRestoreOnStartup)));
   }
 }