Add the request picker and a unit test

components/components_tests.gyp

 # Copyright 2014 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': {
     # This turns on e.g. the filename-based detection of which
     # platforms to include source files on (e.g. files ending in
     # _mac.h or _mac.cc are only compiled on MacOSX).
     'chromium_code': 1,
@@ skipping 405 matching lines @@
     ],
     'network_time_unittest_sources': [
       'network_time/network_time_tracker_unittest.cc',
     ],
     'ntp_snippets_unittest_sources': [
       'ntp_snippets/ntp_snippets_fetcher_unittest.cc',
       'ntp_snippets/ntp_snippets_service_unittest.cc',
     ],
     'offline_pages_background_unittest_sources': [
       'offline_pages/background/request_coordinator_unittest.cc',
+      'offline_pages/background/request_picker_unittest.cc',
       'offline_pages/background/request_queue_in_memory_store_unittest.cc',
       'offline_pages/background/request_queue_unittest.cc',
       'offline_pages/background/save_page_request_unittest.cc',
     ],
     'offline_pages_unittest_sources': [
       'offline_pages/archive_manager_unittest.cc',
       'offline_pages/client_policy_controller_unittest.cc',
       'offline_pages/offline_page_metadata_store_impl_unittest.cc',
       'offline_pages/offline_page_model_unittest.cc',
       'offline_pages/offline_page_storage_manager_unittest.cc',
@@ skipping 1520 matching lines @@
               'dependencies': [
                 '../tools/xdisplaycheck/xdisplaycheck.gyp:xdisplaycheck',
               ],
             }],
           ],
         },
       ],
     }],
   ],
 }