Fixes the cache lock issue.

net/BUILD.gn

 # Copyright (c) 2013 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/chromecast_build.gni")
 import("//build/config/compiler/compiler.gni")
 import("//build/config/crypto.gni")
 import("//build/config/features.gni")
 import("//build/config/ui.gni")
@@ skipping 789 matching lines @@
       "http/http_auth_sspi_win.cc",
       "http/http_auth_sspi_win.h",
       "http/http_basic_state.cc",
       "http/http_basic_state.h",
       "http/http_basic_stream.cc",
       "http/http_basic_stream.h",
       "http/http_cache.cc",
       "http/http_cache.h",
       "http/http_cache_lookup_manager.cc",
       "http/http_cache_lookup_manager.h",
+      "http/http_cache_shared_writers.cc",
+      "http/http_cache_shared_writers.h",
       "http/http_cache_transaction.cc",
       "http/http_cache_transaction.h",
       "http/http_chunked_decoder.cc",
       "http/http_chunked_decoder.h",
       "http/http_content_disposition.cc",
       "http/http_content_disposition.h",
       "http/http_network_layer.cc",
       "http/http_network_layer.h",
       "http/http_network_session.cc",
       "http/http_network_session.h",
@@ skipping 3396 matching lines @@
     "http/http_auth_handler_mock.h",
     "http/http_auth_handler_negotiate_unittest.cc",
     "http/http_auth_handler_unittest.cc",
     "http/http_auth_multi_round_parse_unittest.cc",
     "http/http_auth_preferences_unittest.cc",
     "http/http_auth_sspi_win_unittest.cc",
     "http/http_auth_unittest.cc",
     "http/http_basic_state_unittest.cc",
     "http/http_byte_range_unittest.cc",
     "http/http_cache_lookup_manager_unittest.cc",
+    "http/http_cache_shared_writers_unittest.cc",
     "http/http_cache_unittest.cc",
     "http/http_chunked_decoder_unittest.cc",
     "http/http_content_disposition_unittest.cc",
     "http/http_log_util_unittest.cc",
     "http/http_network_layer_unittest.cc",
     "http/http_network_transaction_ssl_unittest.cc",
     "http/http_network_transaction_unittest.cc",
     "http/http_proxy_client_socket_pool_unittest.cc",
     "http/http_request_headers_unittest.cc",
     "http/http_response_body_drainer_unittest.cc",
@@ skipping 1412 matching lines @@
       "tools/domain_security_preload_generator/trie/trie_writer.cc",
       "tools/domain_security_preload_generator/trie/trie_writer.h",
     ]
     deps = [
       "//base",
       "//crypto",
       "//third_party/boringssl",
     ]
   }
 }