Introduce DeclarativeUserScriptManager.

chrome/chrome_browser_extensions.gypi

 # Copyright (c) 2013 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.
 
 {
   'variables': {
     'chrome_browser_extensions_chromeos_sources': [
       'browser/extensions/api/diagnostics/diagnostics_api.cc',
       'browser/extensions/api/diagnostics/diagnostics_api.h',
       'browser/extensions/api/diagnostics/diagnostics_api_chromeos.cc',
@@ skipping 543 matching lines @@
       'browser/extensions/context_menu_matcher.cc',
       'browser/extensions/context_menu_matcher.h',
       'browser/extensions/convert_user_script.cc',
       'browser/extensions/convert_user_script.h',
       'browser/extensions/convert_web_app.cc',
       'browser/extensions/convert_web_app.h',
       'browser/extensions/crx_installer.cc',
       'browser/extensions/crx_installer.h',
       'browser/extensions/data_deleter.cc',
       'browser/extensions/data_deleter.h',
+      'browser/extensions/declarative_user_script_manager.cc',
+      'browser/extensions/declarative_user_script_manager.h',
       'browser/extensions/declarative_user_script_master.cc',
       'browser/extensions/declarative_user_script_master.h',
       'browser/extensions/dev_mode_bubble_controller.cc',
       'browser/extensions/dev_mode_bubble_controller.h',
       'browser/extensions/devtools_util.cc',
       'browser/extensions/devtools_util.h',
       'browser/extensions/display_info_provider_mac.cc',
       'browser/extensions/display_info_provider_mac.h',
       'browser/extensions/display_info_provider_win.cc',
       'browser/extensions/display_info_provider_win.h',
@@ skipping 555 matching lines @@
           ],
         }, {  # use_brlapi==0
           'sources': [
             'browser/extensions/api/braille_display_private/braille_controller_stub.cc',
           ],
         }],
       ],
     },
   ],
 }