Move content-side Feature Policy code into content/{common,child}/feature_policy

content/child/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/features.gni")
 import("//build/config/ui.gni")
 import("//ppapi/features/features.gni")
 import("//third_party/WebKit/public/public_features.gni")
 
 if (is_component_build) {
@@ skipping 63 matching lines @@
     "db_message_filter.cc",
     "db_message_filter.h",
     "dwrite_font_proxy/dwrite_font_proxy_init_win.cc",
     "dwrite_font_proxy/dwrite_font_proxy_init_win.h",
     "dwrite_font_proxy/dwrite_font_proxy_win.cc",
     "dwrite_font_proxy/dwrite_font_proxy_win.h",
     "dwrite_font_proxy/dwrite_localized_strings_win.cc",
     "dwrite_font_proxy/dwrite_localized_strings_win.h",
     "dwrite_font_proxy/font_fallback_win.cc",
     "dwrite_font_proxy/font_fallback_win.h",
+    "feature_policy/feature_policy_platform.cc",
+    "feature_policy/feature_policy_platform.h",
     "file_info_util.cc",
     "file_info_util.h",
     "fileapi/file_system_dispatcher.cc",
     "fileapi/file_system_dispatcher.h",
     "fileapi/webfilesystem_impl.cc",
     "fileapi/webfilesystem_impl.h",
     "fileapi/webfilewriter_base.cc",
     "fileapi/webfilewriter_base.h",
     "fileapi/webfilewriter_impl.cc",
     "fileapi/webfilewriter_impl.h",
@@ skipping 199 matching lines @@
 
 # See comment at the top of //content/BUILD.gn for how this works.
 group("for_content_tests") {
   visibility = [ "//content/test/*" ]
   if (!is_component_build) {
     public_deps = [
       ":child",
     ]
   }
 }