Cronet: Use stale DNS cache entries experimentally.

components/cronet/android/BUILD.gn

 # 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.
 
 import("//build/buildflag_header.gni")
 import("//build/config/android/config.gni")
 import("//build/config/android/rules.gni")
 import("//build/util/version.gni")
 import("//chrome/version.gni")
 import("//testing/test.gni")
@@ skipping 135 matching lines @@
       "//components/cronet/android/url_request_adapter.cc",
       "//components/cronet/android/url_request_adapter.h",
       "//components/cronet/android/url_request_context_adapter.cc",
       "//components/cronet/android/url_request_context_adapter.h",
       "//components/cronet/android/url_request_error.cc",
       "//components/cronet/android/url_request_error.h",
       "//components/cronet/android/wrapped_channel_upload_element_reader.cc",
       "//components/cronet/android/wrapped_channel_upload_element_reader.h",
       "//components/cronet/histogram_manager.cc",
       "//components/cronet/histogram_manager.h",
+      "//components/cronet/stale_host_resolver.cc",
+      "//components/cronet/stale_host_resolver.h",
       "//components/cronet/url_request_context_config.cc",
       "//components/cronet/url_request_context_config.h",
     ]
 
     include_dirs = [ _cronet_version_header_include_dir ]
 
     cflags = [
       "-DLOGGING=1",
       "-Wno-sign-promo",
     ]
@@ skipping 702 matching lines @@
     ":cronet_package_copy_native_lib",
     ":cronet_package_copy_native_lib_unstripped",
     ":generate_javadoc",
     ":generate_licenses",
     ":jar_cronet_api_source",
     ":jar_cronet_other_source",
     ":jar_cronet_sample_source",
     ":repackage_extracted_jars",
   ]
 }