linux and chromeos: Turn on -Wunused-const-variable.

chrome/browser/policy/url_blacklist_manager.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/policy/url_blacklist_manager.h"
 
 #include "base/bind.h"
 #include "base/files/file_path.h"
 #include "base/message_loop/message_loop.h"
 #include "base/prefs/pref_service.h"
@@ skipping 26 matching lines @@
 using extensions::URLMatcherPortFilter;
 using extensions::URLMatcherSchemeFilter;
 
 namespace policy {
 
 namespace {
 
 // Maximum filters per policy. Filters over this index are ignored.
 const size_t kMaxFiltersPerPolicy = 1000;
 
+#if !defined(OS_CHROMEOS)
+
 const char kServiceLoginAuth[] = "/ServiceLoginAuth";
 
-#if !defined(OS_CHROMEOS)
-
 bool IsSigninFlowURL(const GURL& url) {
   // Whitelist all the signin flow URLs flagged by the SigninManager.
   if (SigninManager::IsWebBasedSigninFlowURL(url))
     return true;
 
   // Additionally whitelist /ServiceLoginAuth.
   if (url.GetOrigin() != GaiaUrls::GetInstance()->gaia_url().GetOrigin())
     return false;
   return url.path() == kServiceLoginAuth;
 }
@@ skipping 332 matching lines @@
 // static
 void URLBlacklistManager::RegisterProfilePrefs(
     user_prefs::PrefRegistrySyncable* registry) {
   registry->RegisterListPref(prefs::kUrlBlacklist,
                              user_prefs::PrefRegistrySyncable::UNSYNCABLE_PREF);
   registry->RegisterListPref(prefs::kUrlWhitelist,
                              user_prefs::PrefRegistrySyncable::UNSYNCABLE_PREF);
 }
 
 }  // namespace policy