Add more components to "gn check", work on dom_distiller.

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 301 matching lines @@
     "//base/allocator",
     "//base/test:test_support",
     "//chrome/browser",
     "//chrome/browser/resources:extension_resource_demo",
     "//chrome/common/extensions/api",
     "//chrome/renderer",
     "//components/autofill/content/browser:risk_proto",
     "//components/autofill/content/browser/wallet:test_support",
     "//components/autofill/content/renderer:test_support",
     "//components/captive_portal:test_support",
-    "//components/dom_distiller/content:content_browser",
+    "//components/dom_distiller/content/browser",
     "//components/dom_distiller/core:test_support",
     "//components/guest_view/browser:test_support",
     "//components/resources",
     "//components/strings",
     "//components/translate/core/common",
     "//components/user_manager:test_support",
     "//crypto:platform",
     "//crypto:test_support",
     "//device/bluetooth:mocks",
     "//device/serial:test_support",
@@ skipping 61 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",
   ]
 }