[components] Switch {RefCounted}ProfileKeyedService to use BrowserContext

chrome/browser/extensions/test_extension_system.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/test_extension_system.h"
 
 #include "base/command_line.h"
 #include "base/prefs/pref_service.h"
 #include "chrome/browser/extensions/api/alarms/alarm_manager.h"
 #include "chrome/browser/extensions/api/location/location_manager.h"
@@ skipping 177 matching lines @@
 
 ExtensionWarningService* TestExtensionSystem::warning_service() {
   return NULL;
 }
 
 Blacklist* TestExtensionSystem::blacklist() {
   return blacklist_.get();
 }
 
 // static
-ProfileKeyedService* TestExtensionSystem::Build(Profile* profile) {
-  return new TestExtensionSystem(profile);
+ProfileKeyedService* TestExtensionSystem::Build(
+    content::BrowserContext* profile) {
+  return new TestExtensionSystem(static_cast<Profile*>(profile));
 }
 
 }  // namespace extensions