Extract DeclarativeUserScriptManager from ExtensionSystem.

extensions/shell/browser/shell_extension_system.cc

 // Copyright 2014 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 "extensions/shell/browser/shell_extension_system.h"
 
 #include <string>
 
 #include "base/files/file_path.h"
 #include "base/files/file_util.h"
@@ skipping 103 matching lines @@
 }
 
 ManagementPolicy* ShellExtensionSystem::management_policy() {
   return nullptr;
 }
 
 SharedUserScriptMaster* ShellExtensionSystem::shared_user_script_master() {
   return nullptr;
 }
 
-DeclarativeUserScriptManager*
-ShellExtensionSystem::declarative_user_script_manager() {
-  return nullptr;
-}
-
 StateStore* ShellExtensionSystem::state_store() {
   return nullptr;
 }
 
 StateStore* ShellExtensionSystem::rules_store() {
   return nullptr;
 }
 
 InfoMap* ShellExtensionSystem::info_map() {
   if (!info_map_.get())
@@ skipping 41 matching lines @@
 ContentVerifier* ShellExtensionSystem::content_verifier() {
   return nullptr;
 }
 
 scoped_ptr<ExtensionSet> ShellExtensionSystem::GetDependentExtensions(
     const Extension* extension) {
   return make_scoped_ptr(new ExtensionSet());
 }
 
 }  // namespace extensions