Allow BackoffEntry to be serialized and deserialized.

net/net.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.
 
 # This file is shared between the regular GYP build, the NaCl GYP build, and
 # the GN build. For GN support, it must have no conditionals or anything like
 # that beyond the simple one-level-deep dictionary of values.
 {
   'variables': {
     # Subset of net source files that are compiled for NaCl (net_nacl target).
@@ skipping 181 matching lines @@
       'android/network_change_notifier_delegate_android.cc',
       'android/network_change_notifier_delegate_android.h',
       'android/network_change_notifier_factory_android.cc',
       'android/network_change_notifier_factory_android.h',
       'android/network_library.cc',
       'android/network_library.h',
       'base/address_tracker_linux.cc',
       'base/address_tracker_linux.h',
       'base/backoff_entry.cc',
       'base/backoff_entry.h',
+      'base/backoff_entry_serializer.cc',
+      'base/backoff_entry_serializer.h',
       'base/cache_type.h',
       'base/chunked_upload_data_stream.cc',
       'base/chunked_upload_data_stream.h',
       'base/crypto_module.h',
       'base/crypto_module_nss.cc',
       'base/crypto_module_openssl.cc',
       'base/data_url.cc',
       'base/data_url.h',
       'base/directory_lister.cc',
       'base/directory_lister.h',
@@ skipping 1593 matching lines @@
       'base/mac/url_conversions_unittest.mm',
     ],
     'net_docs_script': 'tools/net_docs/net_docs.py',
     'net_docs_sources': [
       'README.md',
       'sdch/README.md',
     ],
     'net_docs_output_dir': '<(PRODUCT_DIR)/net/docs',
   }
 }