Extract DeclarativeUserScriptManager from ExtensionSystem.

chrome/browser/extensions/api/declarative_content/content_action.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/declarative_content/content_action.h"
 
 #include <map>
 
 #include "base/lazy_instance.h"
 #include "base/strings/stringprintf.h"
@@ skipping 335 matching lines @@
   return true;
 }
 
 RequestContentScript::RequestContentScript(
     content::BrowserContext* browser_context,
     const Extension* extension,
     const ScriptData& script_data) {
   HostID host_id(HostID::EXTENSIONS, extension->id());
   InitScript(host_id, extension, script_data);
 
-  master_ = ExtensionSystem::Get(browser_context)
-                ->declarative_user_script_manager()
+  master_ = DeclarativeUserScriptManager::Get(browser_context)
                 ->GetDeclarativeUserScriptMasterByID(host_id);
   AddScript();
 }
 
 RequestContentScript::RequestContentScript(
     DeclarativeUserScriptMaster* master,
     const Extension* extension,
     const ScriptData& script_data) {
   HostID host_id(HostID::EXTENSIONS, extension->id());
   InitScript(host_id, extension, script_data);
@@ skipping 131 matching lines @@
                              bool* bad_message,
                              const base::DictionaryValue** action_dict,
                              std::string* instance_type) {
   INPUT_FORMAT_VALIDATE(json_action.GetAsDictionary(action_dict));
   INPUT_FORMAT_VALIDATE(
       (*action_dict)->GetString(keys::kInstanceType, instance_type));
   return true;
 }
 
 }  // namespace extensions