Componentize component_updater: Split crx_file code off into its own component.

chrome/chrome_browser.gypi

 # Copyright 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.
 
 {
   'variables': {
     # All .cc, .h, .m, and .mm files under browser except for:
     # * tests and mocks.
     # * code below browser/chromeos
     # * code below browser/extensions
@@ skipping 2835 matching lines @@
         'chrome_resources.gyp:theme_resources',
         'common',
         'common_net',
         'in_memory_url_index_cache_proto',
         'probe_message_proto',
         '../components/components.gyp:autofill_core_browser',
         '../components/components.gyp:bookmarks_browser',
         '../components/components.gyp:captive_portal',
         '../components/components.gyp:cloud_devices_common',
         '../components/components.gyp:component_metrics_proto',
+        '../components/components.gyp:component_updater',
         '../components/components.gyp:content_settings_core_common',
+        '../components/components.gyp:crx_file',
         '../components/components.gyp:data_reduction_proxy_browser',
         '../components/components.gyp:domain_reliability',
         '../components/components.gyp:favicon_base',
         '../components/components.gyp:favicon_core',
         '../components/components.gyp:feedback_component',
         '../components/components.gyp:gcm_driver',
         '../components/components.gyp:google_core_browser',
         '../components/components.gyp:history_core_browser',
         '../components/components.gyp:history_core_common',
         '../components/components.gyp:infobars_core',
@@ skipping 74 matching lines @@
         ['OS != "ios"', {
           'dependencies': [
             'apps',
             'browser/performance_monitor/performance_monitor.gyp:performance_monitor',
             'common/extensions/api/api.gyp:chrome_api',
             'debugger',
             'installer_util',
             '../third_party/re2/re2.gyp:re2',
             '../cc/cc.gyp:cc',
             '../components/components.gyp:autofill_content_browser',
-            '../components/components.gyp:component_updater',
             '../components/components.gyp:dom_distiller_content',
             '../components/components.gyp:keyed_service_content',
             '../components/components.gyp:navigation_interception',
             '../components/components.gyp:password_manager_content_browser',
             '../components/components.gyp:precache_content',
             '../components/components.gyp:sessions',
             '../components/components.gyp:storage_monitor',
             '../components/components.gyp:translate_content_browser',
             '../components/components.gyp:url_matcher',
             '../components/components.gyp:usb_service',
@@ skipping 653 matching lines @@
             'package_name': 'org/chromium/chrome/browser',
             'template_deps': ['browser/android/tab_load_status.h'],
           },
           'includes': [ '../build/android/java_cpp_template.gypi' ],
         },
       ],
      },
     ],
   ],
 }