Clean up a few more unused globals.

chrome/browser/managed_mode/managed_mode_site_list.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/managed_mode/managed_mode_site_list.h"
 
 #include "base/json/json_file_value_serializer.h"
 #include "base/logging.h"
 #include "base/strings/utf_string_conversions.h"
 #include "base/values.h"
 #include "chrome/common/extensions/extension.h"
 
 using base::DictionaryValue;
 using base::ListValue;
 using base::Value;
 
 const int kSitelistFormatVersion = 1;
 
 const char kCategoriesKey[] = "categories";
 const char kHostnameHashesKey[] = "hostname_hashes";
-const char kIdKey[] = "id";
 const char kNameKey[] = "name";
 const char kSitesKey[] = "sites";
 const char kSitelistFormatVersionKey[] = "version";
 const char kThumbnailKey[] = "thumbnail";
 const char kThumbnailUrlKey[] = "thumbnail_url";
 const char kUrlKey[] = "url";
 const char kWhitelistKey[] = "whitelist";
 
 namespace {
 
@@ skipping 215 matching lines @@
   GURL base_url =
       extensions::Extension::GetBaseURLFromExtensionId(extension_id_);
   GURL thumbnail_url = base_url.Resolve(thumbnail);
   if (!thumbnail_url.is_valid()) {
     LOG(ERROR) << "Invalid thumbnail";
     return;
   }
 
   dest->SetString(kThumbnailUrlKey, thumbnail_url.spec());
 }