Clean up a few more unused globals.

chrome/browser/extensions/api/sync_file_system/sync_file_system_api.cc

 // Copyright (c) 2012 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/extensions/api/sync_file_system/sync_file_system_api.h"
 
 #include <string>
 #include <utility>
 
 #include "base/bind.h"
@@ skipping 24 matching lines @@
 using sync_file_system::SyncFileStatus;
 using sync_file_system::SyncFileSystemServiceFactory;
 using sync_file_system::SyncStatusCode;
 
 namespace extensions {
 
 namespace {
 
 // Error messages.
 const char kFileError[] = "File error %d.";
-const char kQuotaError[] = "Quota error %d.";
 const char kUnsupportedConflictResolutionPolicy[] =
     "Policy %s is not supported.";
 
 sync_file_system::SyncFileSystemService* GetSyncFileSystemService(
     Profile* profile) {
   sync_file_system::SyncFileSystemService* service =
       SyncFileSystemServiceFactory::GetForProfile(profile);
   DCHECK(service);
   ExtensionSyncEventObserver* observer =
       ExtensionSyncEventObserverFactory::GetForProfile(profile);
@@ skipping 316 matching lines @@
 
 bool SyncFileSystemGetServiceStatusFunction::RunImpl() {
   sync_file_system::SyncFileSystemService* service = GetSyncFileSystemService(
       profile());
   results_ = api::sync_file_system::GetServiceStatus::Results::Create(
       SyncServiceStateToExtensionEnum(service->GetSyncServiceState()));
   return true;
 }
 
 }  // namespace extensions