Pull CrxInstaller out of ExtensionsService.

chrome/chrome.gyp

 # Copyright (c) 2009 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': {
     'chromium_code': 1,
     # Define the common dependencies that contain all the actual
     # Chromium functionality.  This list gets pulled in below by
     # the link of the actual chrome (or chromium) executable on
@@ skipping 912 matching lines @@
         'browser/download/save_file.h',
         'browser/download/save_file_manager.cc',
         'browser/download/save_file_manager.h',
         'browser/download/save_item.cc',
         'browser/download/save_item.h',
         'browser/download/save_package.cc',
         'browser/download/save_package.h',
         'browser/download/save_types.h',
         'browser/encoding_menu_controller.cc',
         'browser/encoding_menu_controller.h',
+        'browser/extensions/crx_installer.cc',
+        'browser/extensions/crx_installer.h',
         'browser/extensions/extension_bookmarks_module.cc',
         'browser/extensions/extension_bookmarks_module.h',
         'browser/extensions/extension_bookmarks_module_constants.cc',
         'browser/extensions/extension_bookmarks_module_constants.h',
         'browser/extensions/extension_creator.cc',
         'browser/extensions/extension_creator.h',
         'browser/extensions/extension_dom_ui.cc',
         'browser/extensions/extension_dom_ui.h',
         'browser/extensions/extension_event_names.cc',
         'browser/extensions/extension_event_names.h',
@@ skipping 4197 matching lines @@
               # Use outputs of this action as inputs for the main target build.
               # Seems as a misnomer but makes this happy on Linux (scons).
               'process_outputs_as_sources': 1,
             },
           ],  # 'actions'
         },
       ]
     }],
   ],  # 'conditions'
 }