Move the parsing of homepage_url" and "devtools_page" out of Extension.

chrome/chrome_browser_extensions.gypi

 # 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.
 
 {
   'targets': [
     {
       'target_name': 'browser_extensions',
       'type': 'static_library',
       'variables': { 'enable_wexit_time_destructors': 1, },
@@ skipping 600 matching lines @@
         'browser/extensions/image_loading_tracker.h',
         'browser/extensions/installed_loader.cc',
         'browser/extensions/installed_loader.h',
         'browser/extensions/key_identifier_conversion_views.cc',
         'browser/extensions/key_identifier_conversion_views.h',
         'browser/extensions/lazy_background_task_queue.cc',
         'browser/extensions/lazy_background_task_queue.h',
         'browser/extensions/location_bar_controller.h',
         'browser/extensions/management_policy.cc',
         'browser/extensions/management_policy.h',
+        'browser/extensions/manifest_url_parser.cc',
+        'browser/extensions/manifest_url_parser.h',
         'browser/extensions/menu_manager.cc',
         'browser/extensions/menu_manager.h',
         'browser/extensions/message_handler.cc',
         'browser/extensions/message_handler.h',
         'browser/extensions/navigation_observer.cc',
         'browser/extensions/navigation_observer.h',
         'browser/extensions/pack_extension_job.cc',
         'browser/extensions/pack_extension_job.h',
         'browser/extensions/page_action_controller.cc',
         'browser/extensions/page_action_controller.h',
@@ skipping 337 matching lines @@
           'msvs_settings': {
             'VCLinkerTool': {
               'SubSystem': '2',  # Set /SUBSYSTEM:WINDOWS
             },
           },
         },
       ],
     }, ],  # 'OS=="win"'
   ],  # 'conditions'
 }