Cronet: Use stale DNS cache entries experimentally.

components/cronet/cronet_static.gypi

 # 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.
 
 {
   # Included in 'cronet_static'.
   'dependencies': [
     '../base/base.gyp:base',
     '../base/third_party/dynamic_annotations/dynamic_annotations.gyp:dynamic_annotations',
     '../url/url.gyp:url_url_features',
@@ skipping 32 matching lines @@
     'android/url_request_adapter.cc',
     'android/url_request_adapter.h',
     'android/url_request_context_adapter.cc',
     'android/url_request_context_adapter.h',
     'android/url_request_error.cc',
     'android/url_request_error.h',
     'android/wrapped_channel_upload_element_reader.cc',
     'android/wrapped_channel_upload_element_reader.h',
     'histogram_manager.cc',
     'histogram_manager.h',
+    'stale_host_resolver.cc',
+    'stale_host_resolver.h',
     'url_request_context_config.cc',
     'url_request_context_config.h',
   ],
   'cflags': [
     '-DLOGGING=1',
     '-fdata-sections',
     '-ffunction-sections',
     '-fno-rtti',
     '-fvisibility=hidden',
     '-fvisibility-inlines-hidden',
@@ skipping 16 matching lines @@
           'DATA_REDUCTION_PROXY_SUPPORT'
         ],
         'sources': [
           'android/cronet_data_reduction_proxy.cc',
           'android/cronet_data_reduction_proxy.h',
         ],
       }
     ],
   ],
 }