[Extensions] Use compiled feature files

extensions/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.
 
 # TODO(rockot) bug 505926: Don't include chrome files from here.
 # See chrome_browser_tests_extensions_sources below
 import("//chrome/chrome_tests.gni")
 import("//extensions/extensions.gni")
 import("//testing/test.gni")
 import("//tools/grit/grit_rule.gni")
@@ skipping 73 matching lines @@
     "//components/cast_certificate:test_support",
     "//components/guest_view/browser:test_support",
     "//components/pref_registry:test_support",
     "//components/prefs:test_support",
     "//content/public/common",
     "//content/test:test_support",
     "//extensions/browser",
     "//extensions/common",
     "//extensions/common/api",
     "//extensions/common/api:api_registration",
+    "//extensions/test:extensions_features",
     "//net:test_support",
     "//testing/gmock",
     "//testing/gtest",
     "//third_party/cld_2",
   ]
 
   public_deps = [
     "//content/public/browser",
     "//extensions/common/api/cast_channel:cast_channel_proto",
   ]
@@ skipping 253 matching lines @@
     "//testing/gtest",
     "//third_party/hunspell",
     "//third_party/icu",
     "//third_party/libpng",
     "//third_party/zlib",
     "//ui/base:test_support",
     "//ui/resources:ui_test_pak",
     "//ui/web_dialogs:test_support",
   ]
 }