Move DeclarativeUserScriptManager/Master and UserScriptLoader to //extensions.

chrome/browser/extensions/declarative_user_script_master.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 "chrome/browser/extensions/declarative_user_script_master.h"
-
-#include <set>
-
-#include "chrome/browser/profiles/profile.h"
-
-namespace extensions {
-
-DeclarativeUserScriptMaster::DeclarativeUserScriptMaster(Profile* profile,
-                                                         const HostID& host_id)
-    : host_id_(host_id),
-      loader_(profile,
-              host_id,
-              false /* listen_for_extension_system_loaded */) {
-}
-
-DeclarativeUserScriptMaster::~DeclarativeUserScriptMaster() {
-}
-
-void DeclarativeUserScriptMaster::AddScript(const UserScript& script) {
-  std::set<UserScript> set;
-  set.insert(script);
-  loader_.AddScripts(set);
-}
-
-void DeclarativeUserScriptMaster::RemoveScript(const UserScript& script) {
-  std::set<UserScript> set;
-  set.insert(script);
-  loader_.RemoveScripts(set);
-}
-
-void DeclarativeUserScriptMaster::ClearScripts() {
-  loader_.ClearScripts();
-}
-
-}  // namespace extensions