Componentize proxy code from chrome/browser/net

components/proxy_config/BUILD.gn

Index: components/proxy_config/BUILD.gn
diff --git a/components/proxy_config/BUILD.gn b/components/proxy_config/BUILD.gn
index 439fd305351699aaa8c4265afc7bee1e2adbbd6c..a026b4008fca9149c265b91e9198e60f4dd48494 100644
--- a/components/proxy_config/BUILD.gn
+++ b/components/proxy_config/BUILD.gn
@@ -2,12 +2,18 @@
 # Use of this source code is governed by a BSD-style license that can be
 # found in the LICENSE file.
 
-# GYP version: components/proxy_config.gypi:proxy_config_component
+# GYP version: components/proxy_config.gypi:proxy_config
 component("proxy_config") {
   sources = [
+    "pref_proxy_config_tracker.cc",
+    "pref_proxy_config_tracker.h",
+    "pref_proxy_config_tracker_impl.cc",
+    "pref_proxy_config_tracker_impl.h",
     "proxy_config_dictionary.cc",
     "proxy_config_dictionary.h",
     "proxy_config_export.h",
+    "proxy_config_pref_names.cc",
+    "proxy_config_pref_names.h",
     "proxy_prefs.cc",
     "proxy_prefs.h",
   ]
@@ -16,6 +22,8 @@ component("proxy_config") {
 
   deps = [
     "//base",
+    "//base:prefs",
     "//net",
+    "//url",
   ]
 }