Move some proxy config code out of src/chrome

chrome/browser/chromeos/BUILD.gn

Index: chrome/browser/chromeos/BUILD.gn
diff --git a/chrome/browser/chromeos/BUILD.gn b/chrome/browser/chromeos/BUILD.gn
index 1b494e37dbf5950579769483308d1d9a6fb988df..7f12e4ab2c6245466d0ca723bd578b7e56d462b8 100644
--- a/chrome/browser/chromeos/BUILD.gn
+++ b/chrome/browser/chromeos/BUILD.gn
@@ -926,10 +926,6 @@ source_set("chromeos") {
     "net/network_portal_web_dialog.h",
     "net/network_state_notifier.cc",
     "net/network_state_notifier.h",
-    "net/onc_utils.cc",
-    "net/onc_utils.h",
-    "net/proxy_config_handler.cc",
-    "net/proxy_config_handler.h",
     "net/shill_error.cc",
     "net/shill_error.h",
     "net/wake_on_wifi_connection_observer.cc",
@@ -1132,8 +1128,6 @@ source_set("chromeos") {
     "profiles/profile_list_chromeos.h",
     "profiles/profile_util.cc",
     "profiles/profile_util.h",
-    "proxy_config_service_impl.cc",
-    "proxy_config_service_impl.h",
     "proxy_cros_settings_parser.cc",
     "proxy_cros_settings_parser.h",
     "reset/metrics.h",
@@ -1246,10 +1240,6 @@ source_set("chromeos") {
     "ui/mobile_config_ui.h",
     "ui/screen_capture_notification_ui_chromeos.cc",
     "ui/screen_capture_notification_ui_chromeos.h",
-    "ui_proxy_config.cc",
-    "ui_proxy_config.h",
-    "ui_proxy_config_service.cc",
-    "ui_proxy_config_service.h",
     "upgrade_detector_chromeos.cc",
     "upgrade_detector_chromeos.h",