Remove Quirks flag, limit server retries

components/quirks/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.
 
 source_set("quirks") {
   sources = [
     "pref_names.cc",
     "pref_names.h",
     "quirks_client.cc",
     "quirks_client.h",
     "quirks_export.h",
     "quirks_manager.cc",
     "quirks_manager.h",
-    "switches.cc",
-    "switches.h",
   ]
 
   defines = [ "QUIRKS_IMPLEMENTATION" ]
 
   deps = [
     "//base",
     "//components/prefs",
     "//components/version_info",
     "//net",
     "//url",
   ]
 }