Componentize proxy code from chrome/browser/net

chrome/browser/chromeos/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/features.gni")
 import("//build/config/ui.gni")
 import("//chrome/chrome_tests.gni")
 import("//media/media_options.gni")
 import("//third_party/protobuf/proto_library.gni")
 
@@ skipping 51 matching lines @@
     "//chrome/installer/util",
     "//chromeos",
     "//chromeos/ime:gencode",
     "//chromeos:cryptohome_proto",
     "//chromeos:cryptohome_signkey_proto",
     "//chromeos:power_manager_proto",
     "//components/onc",
     "//components/ownership",
     "//components/pairing",
     "//components/policy",
+    "//components/proxy_config",
 
     # This depends directly on the variations target, rather than just
     # transitively via the common target because the proto sources need to
     # be generated before code in this target can start building.
     "//components/strings",
     "//components/variations",
     "//content/public/browser",
     "//content/public/common",
     "//crypto",
     "//dbus",
@@ skipping 114 matching lines @@
     "policy/proto/install_attributes.proto",
   ]
 }
 
 proto_library("attestation_proto") {
   sources = [
     "attestation/attestation_key_payload.proto",
     "attestation/attestation_signed_data.proto",
   ]
 }