Create a about handler 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 1858 matching lines @@
       'browser/metrics/variations/variations_service.cc',
       'browser/metrics/variations/variations_service.h',
     ],
     'chrome_browser_nacl_sources': [
       'browser/nacl_host/nacl_browser_delegate_impl.cc',
       'browser/nacl_host/nacl_browser_delegate_impl.h',
       'browser/nacl_host/nacl_infobar_delegate.cc',
       'browser/nacl_host/nacl_infobar_delegate.h',
     ],
     'chrome_browser_net_sources': [
-      'browser/net/about_protocol_handler.cc',
-      'browser/net/about_protocol_handler.h',
       'browser/net/async_dns_field_trial.cc',
       'browser/net/async_dns_field_trial.h',
       'browser/net/certificate_error_reporter.cc',
       'browser/net/certificate_error_reporter.h',
       'browser/net/chrome_cookie_notification_details.h',
       'browser/net/chrome_extensions_network_delegate.cc',
       'browser/net/chrome_extensions_network_delegate.h',
       'browser/net/chrome_http_user_agent_settings.cc',
       'browser/net/chrome_http_user_agent_settings.h',
       'browser/net/chrome_net_log.cc',
@@ skipping 1337 matching lines @@
       ],
       'conditions': [
         ['OS != "ios"', {
           'dependencies': [
             'apps',
             'common_mojo_bindings',
             'debugger',
             'installer_util',
             '../third_party/re2/re2.gyp:re2',
             '../cc/cc.gyp:cc',
+            '../components/components.gyp:about_handler',
             '../components/components.gyp:autofill_content_browser',
             '../components/components.gyp:browsing_data',
             '../components/components.gyp:data_reduction_proxy_content_browser',
             '../components/components.gyp:devtools_discovery',
             '../components/components.gyp:devtools_http_handler',
             '../components/components.gyp:dom_distiller_content_browser',
             '../components/components.gyp:favicon_content',
             '../components/components.gyp:guest_view_browser',
             '../components/components.gyp:history_content_browser',
             '../components/components.gyp:keyed_service_content',
@@ skipping 842 matching lines @@
             '../components/components.gyp:omnibox_browser',
             '../components/components.gyp:rlz',
             '../components/components.gyp:search_engines',
             '../rlz/rlz.gyp:rlz_lib',
           ],
         },
       ],
     }],
   ],
 }