[subresource_filter] Mac UI updated and xib replaced with code based layout.

chrome/app/nibs/BUILD.gn

 # Copyright 2016 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/mac/rules.gni")
 
 assert(is_mac)
 
 translated_xibs = [
   "AppMenu.xib",
   "BookmarkAllTabs.xib",
   "BookmarkBubble.xib",
   "BookmarkEditor.xib",
   "BookmarkNameFolder.xib",
   "CollectedCookies.xib",
   "ContentBlockedCookies.xib",
   "ContentBlockedDownloads.xib",
   "ContentBlockedGeolocation.xib",
   "ContentBlockedMIDISysEx.xib",
   "ContentBlockedMedia.xib",
   "ContentBlockedMixedScript.xib",
   "ContentBlockedPlugins.xib",
   "ContentBlockedPopups.xib",
   "ContentBlockedSimple.xib",
   "ContentProtocolHandlers.xib",
-  "ContentSubresourceFilter.xib",
   "CookieDetailsView.xib",
   "DownloadItem.xib",
   "DownloadShelf.xib",
   "ExtensionInstallPrompt.xib",
   "ExtensionInstallPromptNoWarnings.xib",
   "ExtensionInstallPromptWebstoreData.xib",
   "ExtensionInstalledBubble.xib",
   "FirstRunBubble.xib",
   "FirstRunDialog.xib",
   "HttpAuthLoginSheet.xib",
@@ skipping 30 matching lines @@
     rebase_path(table_path, root_build_dir),
   ]
   if (!use_system_xcode) {
     args += [
       "--developer_dir",
       hermetic_xcode_path,
     ]
   }
   args += rebase_path(translated_xibs, root_build_dir)
 }