Adding a BUILD file for both gyp and gn for the new background_offlining

components/offline_pages.gypi

 # Copyright 2015 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': [
     {
       # GN: //components/offline_pages:offline_pages
       'target_name': 'offline_pages',
       'type': 'static_library',
@@ skipping 19 matching lines @@
         'offline_pages/offline_page_model.h',
         'offline_pages/offline_page_metadata_store.cc',
         'offline_pages/offline_page_metadata_store.h',
         'offline_pages/offline_page_metadata_store_impl.cc',
         'offline_pages/offline_page_metadata_store_impl.h',
         'offline_pages/snapshot_controller.cc',
         'offline_pages/snapshot_controller.h',
       ],
     },
     {
+      # GN: //components/offline_pages/background:background_offliner
+      'target_name': 'background_offliner',
+      'type': 'static_library',
+      'include_dirs': [
+        '..',
+        '../..',
+      ],
+      'dependencies': [
+        '../base/base.gyp:base',
+        '../net/net.gyp:net',
+        '../url/url.gyp:url_lib',
+      ],
+      'sources': [
+        'offline_pages/background/offliner.h',
+        'offline_pages/background/request_coordinator.cc',
+        'offline_pages/background/request_coordinator.h',
+        'offline_pages/background/scheduler.h',
+      ],
+    },
+    {
       # GN version: //components/offline_pages:test_support
       'target_name': 'offline_pages_test_support',
       'type': 'static_library',
       'dependencies': [
         '../base/base.gyp:base',
         '../testing/gtest.gyp:gtest',
         '../url/url.gyp:url_lib',
         'offline_pages',
       ],
       'sources': [
@@ skipping 25 matching lines @@
           'type': 'none',
           'variables': {
             'source_file': 'offline_pages/offline_page_model.h',
           },
           'includes': [ '../build/android/java_cpp_enum.gypi' ],
         },
       ],
     }],
   ],
 }