Move content/child/background_sync to Blink.

content/test/BUILD.gn

 # 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.
 
 import("//build/config/chrome_build.gni")
 import("//build/config/compiler/compiler.gni")
 import("//build/config/crypto.gni")
 import("//build/config/features.gni")
 import("//build/config/ui.gni")
 import("//mojo/public/tools/bindings/mojom.gni")
@@ skipping 1223 matching lines @@
     "../browser/web_contents/web_contents_impl_unittest.cc",
     "../browser/web_contents/web_contents_user_data_unittest.cc",
     "../browser/web_contents/web_contents_view_aura_unittest.cc",
     "../browser/web_contents/web_contents_view_mac_unittest.mm",
     "../browser/web_contents/web_drag_dest_mac_unittest.mm",
     "../browser/web_contents/web_drag_source_mac_unittest.mm",
     "../browser/websockets/websocket_manager_unittest.cc",
     "../browser/webui/url_data_manager_backend_unittest.cc",
     "../browser/webui/web_ui_data_source_unittest.cc",
     "../browser/webui/web_ui_message_handler_unittest.cc",
-    "../child/background_sync/background_sync_type_converters_unittest.cc",
     "../child/blink_platform_impl_unittest.cc",
     "../child/blob_storage/blob_consolidation_unittest.cc",
     "../child/blob_storage/blob_transport_controller_unittest.cc",
     "../child/dwrite_font_proxy/dwrite_font_proxy_win_unittest.cc",
     "../child/dwrite_font_proxy/font_fallback_win_unittest.cc",
     "../child/fileapi/webfilewriter_base_unittest.cc",
     "../child/font_warmup_win_unittest.cc",
     "../child/indexed_db/mock_webidbcallbacks.cc",
     "../child/indexed_db/mock_webidbcallbacks.h",
     "../child/indexed_db/webidbcursor_impl_unittest.cc",
@@ skipping 451 matching lines @@
   if (is_android) {
     deps += [ "//testing/android/native_test:native_test_native_code" ]
   }
 }
 
 group("fuzzers") {
   deps = [
     "//content/test/fuzzer",
   ]
 }