Introduce SystemNetworkContextManager.

chrome/browser/BUILD.gn

 # 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.
 
 import("//build/config/chrome_build.gni")
 import("//build/config/crypto.gni")
 import("//build/config/features.gni")
 import("//build/config/ui.gni")
 import("//build/split_static_library.gni")
 import("//chrome/common/features.gni")
@@ skipping 732 matching lines @@
     "net/service_providers_win.cc",
     "net/service_providers_win.h",
     "net/spdyproxy/data_reduction_proxy_chrome_io_data.cc",
     "net/spdyproxy/data_reduction_proxy_chrome_io_data.h",
     "net/spdyproxy/data_reduction_proxy_chrome_settings.cc",
     "net/spdyproxy/data_reduction_proxy_chrome_settings.h",
     "net/spdyproxy/data_reduction_proxy_chrome_settings_factory.cc",
     "net/spdyproxy/data_reduction_proxy_chrome_settings_factory.h",
     "net/sth_distributor_provider.cc",
     "net/sth_distributor_provider.h",
+    "net/system_network_context_manager.cc",
+    "net/system_network_context_manager.h",
     "net/timed_cache.cc",
     "net/timed_cache.h",
     "net/url_info.cc",
     "net/url_info.h",
     "net_benchmarking.cc",
     "net_benchmarking.h",
     "notifications/alert_dispatcher_mac.h",
     "notifications/desktop_notification_profile_util.cc",
     "notifications/desktop_notification_profile_util.h",
     "notifications/login_state_notification_blocker_chromeos.cc",
@@ skipping 854 matching lines @@
     "//components/web_cache/browser",
     "//components/web_resource",
     "//components/webdata/common",
     "//components/webdata_services",
     "//content/app/resources",
     "//content/public/browser",
     "//content/public/common",
     "//content/public/common:feature_h264_with_openh264_ffmpeg",
     "//content/public/common:features",
     "//content/public/common:service_names",
+    "//content/public/network",
     "//courgette:courgette_lib",
     "//crypto",
     "//crypto:platform",
     "//device/base",
     "//device/bluetooth:mojo",
     "//device/usb/mojo",
     "//device/usb/public/interfaces",
     "//device/vr/features",
     "//extensions/features",
     "//google_apis",
@@ skipping 2979 matching lines @@
       "//components/search_engines",
       "//rlz:rlz_lib",
     ]
   }
 }
 
 service_manifest("preferences_forwarder_manifest") {
   name = "preferences_forwarder"
   source = "prefs/forwarder_manifest.json"
 }