XXX test gn format everything

extensions/browser/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/crypto.gni")
 import("//build/config/features.gni")
 
 # GYP version: extensions/extensions.gyp:extensions_browser
 source_set("browser") {
-  sources = [
-  ]
+  sources = []
 
   deps = [
     "//components/copresence_sockets",
     "//components/keyed_service/content",
     "//components/keyed_service/core",
     "//components/pref_registry",
     "//components/sessions:sessions_content",
     "//components/web_cache/browser",
     "//components/web_modal",
     "//content/public/browser",
     "//crypto:platform",
     "//extensions/common",
     "//extensions/common/api",
     "//extensions/common/api:api_registration",
     "//extensions/strings",
     "//google_apis",
     "//skia",
     "//third_party/leveldatabase",
-    "//third_party/re2"
+    "//third_party/re2",
   ]
 
   if (enable_extensions) {
     # Includes all API implementations and the ExtensionsApiClient
     # interface. Moving an API from src/chrome to src/extensions implies
     # it can be cleanly disabled with enable_extensions=false.
     # TODO: Eventually the entire extensions module should not be built
     # when enable_extensions=false.
     sources += [
       "api/activity_log/web_request_constants.cc",
@@ skipping 461 matching lines @@
       "//crypto:platform",
       "//device/bluetooth",
       "//device/core",
       "//device/hid",
       "//device/serial",
       "//device/usb",
       "//extensions/common/api/cast_channel:cast_channel_proto",
     ]
 
     if (use_openssl) {
-      sources += [
-        "api/cast_channel/cast_auth_util_openssl.cc",
-      ]
+      sources += [ "api/cast_channel/cast_auth_util_openssl.cc" ]
     } else {
-      sources += [
-        "api/cast_channel/cast_auth_util_nss.cc",
-      ]
+      sources += [ "api/cast_channel/cast_auth_util_nss.cc" ]
     }
 
     if (is_chromeos) {
       sources += [
         "api/vpn_provider/vpn_provider_api.cc",
         "api/vpn_provider/vpn_provider_api.h",
         "api/vpn_provider/vpn_service.cc",
         "api/vpn_provider/vpn_service.h",
         "api/vpn_provider/vpn_service_factory.cc",
         "api/vpn_provider/vpn_service_factory.h",
       ]
     }
   }
 
   if (is_win) {
-    cflags = [
-      "/wd4267", # TODO(jschuh): crbug.com/167187 fix size_t to int truncations.
-    ]
+    cflags = [ "/wd4267" ]  # TODO(jschuh): crbug.com/167187 fix size_t to int truncations.
   }
 }