Pull out IDN_Spoof_Checker to separate cc/h files.

components/url_formatter/BUILD.gn

 # Copyright 2015 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.
 
 if (is_android) {
   import("//build/config/android/rules.gni")
 }
 
 static_library("url_formatter") {
   sources = [
     "android/component_jni_registrar.cc",
     "android/component_jni_registrar.h",
     "elide_url.cc",
     "elide_url.h",
+    "idn_spoof_checker.cc",
+    "idn_spoof_checker.h",
     "url_fixer.cc",
     "url_fixer.h",
     "url_formatter.cc",
     "url_formatter.h",
     "url_formatter_android.cc",
     "url_formatter_android.h",
   ]
 
   # TODO(jschuh): crbug.com/167187 fix size_t to int truncations.
   configs += [ "//build/config/compiler:no_size_t_to_int_warning" ]
@@ skipping 27 matching lines @@
     "//net",
     "//testing/gtest",
     "//ui/gfx",
     "//url",
   ]
 
   if (is_android) {
     deps -= [ "//ui/gfx" ]
   }
 }