extensions: Remove chrome.webSocketProxyPrivate API

chrome/chrome_tests.gypi

 # Copyright 2013 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.
 {
   'variables' : {
     'pyautolib_sources': [
       'app/chrome_command_ids.h',
       'app/chrome_dll_resource.h',
       'common/automation_constants.h',
       'common/pref_names.cc',
@@ skipping 1335 matching lines @@
         'browser/extensions/api/system_storage/system_storage_eject_apitest.cc',
         'browser/extensions/api/tab_capture/tab_capture_apitest.cc',
         'browser/extensions/api/tabs/tabs_test.cc',
         'browser/extensions/api/terminal/terminal_private_apitest.cc',
         'browser/extensions/api/test/apitest_apitest.cc',
         'browser/extensions/api/top_sites/top_sites_apitest.cc',
         'browser/extensions/api/usb/usb_apitest.cc',
         'browser/extensions/api/usb/usb_manual_apitest.cc',
         'browser/extensions/api/web_navigation/web_navigation_apitest.cc',
         'browser/extensions/api/web_request/web_request_apitest.cc',
-        'browser/extensions/api/web_socket_proxy_private/web_socket_proxy_private_apitest.cc',
         'browser/extensions/api/webstore_private/webstore_private_apitest.cc',
         'browser/extensions/app_background_page_apitest.cc',
         'browser/extensions/app_process_apitest.cc',
         'browser/extensions/background_app_browsertest.cc',
         'browser/extensions/background_page_apitest.cc',
         'browser/extensions/background_scripts_apitest.cc',
         'browser/extensions/chrome_app_api_browsertest.cc',
         'browser/extensions/content_script_apitest.cc',
         'browser/extensions/content_security_policy_apitest.cc',
         'browser/extensions/convert_web_app_browsertest.cc',
@@ skipping 2033 matching lines @@
             'utility',
           ],
           'sources': [
             'tools/service_discovery_sniffer/service_discovery_sniffer.h',
             'tools/service_discovery_sniffer/service_discovery_sniffer.cc',
           ],
         }]
     }],
   ],  # 'conditions'
 }