Remove gcdPrivate API code.

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/compiler/compiler.gni")
 import("//build/config/crypto.gni")
 import("//build/config/features.gni")
 import("//build/config/ui.gni")
 import("//chrome/common/features.gni")
@@ skipping 2631 matching lines @@
         "../browser/printing/cloud_print/test/cloud_print_policy_browsertest.cc",
       ]
     }
     if (!enable_print_preview || is_chromeos) {
       sources -= [
         # Not intended to run on ChromeOS.
         "../browser/printing/cloud_print/test/cloud_print_proxy_process_browsertest.cc",
       ]
     }
     if (enable_mdns) {
-      sources += [
-        "../browser/extensions/api/gcd_private/gcd_private_apitest.cc",
-        "../browser/ui/webui/local_discovery/local_discovery_ui_browsertest.cc",
-      ]
+      sources += [ "../browser/ui/webui/local_discovery/local_discovery_ui_browsertest.cc" ]
     }
     if (use_brlapi) {
       deps += [ "//build/linux/libbrlapi" ]
     } else {
       sources -= [ "../browser/extensions/api/braille_display_private/braille_display_private_apitest.cc" ]
     }
     if (is_chrome_branded && safe_browsing_mode == 1 && !is_mac) {
       sources -= [
         # These tests depend on single process mode, which is disabled in
         # official builds.
@@ skipping 1479 matching lines @@
       "//extensions:extensions_resources",
       "//extensions/strings",
       "//media/cast:test_support",
 
       # This will add all of the unit tests for the schema compiler to this
       # target.
       "//tools/json_schema_compiler/test:unit_tests",
     ]
     if (enable_service_discovery) {
       sources += [
-        "../browser/extensions/api/gcd_private/privet_v3_context_getter_unittest.cc",
-        "../browser/extensions/api/gcd_private/privet_v3_session_unittest.cc",
         "../browser/extensions/api/mdns/dns_sd_registry_unittest.cc",
         "../browser/extensions/api/mdns/mdns_api_unittest.cc",
       ]
     }
     if (!is_chromeos) {
       sources += [
         "../browser/extensions/api/messaging/native_message_process_host_unittest.cc",
         "../browser/extensions/api/messaging/native_messaging_host_manifest_unittest.cc",
         "../browser/extensions/api/messaging/native_messaging_policy_handler_unittest.cc",
       ]
@@ skipping 1024 matching lines @@
 }
 
 if (is_win) {
   loadable_module("conflicts_dll") {
     testonly = true
     sources = [
       "conflicts/conflicts_dll.cc",
     ]
   }
 }