[refactor] Extract the platform-specific TrustStore instantiations and

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 541 matching lines @@
       "cert/ct_sct_to_string.cc",
       "cert/ct_sct_to_string.h",
       "cert/ct_serialization.cc",
       "cert/ct_serialization.h",
       "cert/ct_signed_certificate_timestamp_log_param.cc",
       "cert/ct_signed_certificate_timestamp_log_param.h",
       "cert/ev_root_ca_metadata.cc",
       "cert/ev_root_ca_metadata.h",
       "cert/internal/cert_issuer_source_nss.cc",
       "cert/internal/cert_issuer_source_nss.h",
+      "cert/internal/system_trust_store.cc",
+      "cert/internal/system_trust_store.h",
       "cert/internal/trust_store_mac.cc",
       "cert/internal/trust_store_mac.h",
       "cert/internal/trust_store_nss.cc",
       "cert/internal/trust_store_nss.h",
       "cert/jwk_serializer.cc",
       "cert/jwk_serializer.h",
       "cert/merkle_audit_proof.cc",
       "cert/merkle_audit_proof.h",
       "cert/merkle_consistency_proof.cc",
       "cert/merkle_consistency_proof.h",
@@ skipping 5222 matching lines @@
   ]
   deps = [
     ":net_fuzzer_test_support",
     ":test_support",
     "//base",
     "//net",
   ]
   dict = "data/fuzzer_dictionaries/net_spdy_session_fuzzer.dict"
   seed_corpus = "data/fuzzer_data/net_spdy_session_fuzzer/"
 }