Componentize proxy code from chrome/browser/net

chrome/test/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("//chrome/chrome_tests.gni")
 import("//chrome/test/base/js2gtest.gni")
@@ skipping 1335 matching lines @@
       # dependencies block below, rather than here.
       # Unit tests should only depend on:
       # 1) everything that the chrome binaries depend on:
       "//chrome:browser_dependencies",
       "//chrome:child_dependencies",
 
       # 2) test-specific support libraries:
       ":test_support_unit",
       "//base/test:test_support",
       "//chrome/test:test_support",
+      "//components/proxy_config",
       "//components/resources",
       "//components/content_settings/core/test:test_support",
       "//content/test:test_support",
       "//content/public/app:both",
       "//crypto:platform",
       "//crypto:test_support",
       "//net",
       "//net:test_support",
       "//sync:test_support_sync_api",
       "//sync:test_support_sync_core",
@@ skipping 591 matching lines @@
     "//third_party/mojo/src/mojo/edk/system",
   ]
 
   if (!is_android && use_ash) {
     sources += rebase_path(
             chrome_tests_unit_gypi_values.chrome_test_support_unit_ash_sources,
             ".",
             "//chrome")
   }
 }