[net] HostResolverImpl + DnsTransaction + DnsConfigService = Asynchronous DNS ready for experiments.

chrome/common/chrome_switches.cc

 // Copyright (c) 2012 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.
 
 #include "chrome/common/chrome_switches.h"
 
 #include "base/base_switches.h"
 #include "base/command_line.h"
 
 namespace switches {
@@ skipping 401 matching lines @@
 const char kDnsServer[]                     = "dns-server";
 
 // Replaces the download shelf with a new experimental UI.
 const char kDownloadsNewUI[]                = "downloads-new-ui";
 
 // Dump any accumualted histograms to the log when browser terminates (requires
 // logging to be enabled to really do anything). Used by developers and test
 // scripts.
 const char kDumpHistogramsOnExit[]          = "dump-histograms-on-exit";
 
+// Enables the experimental asynchronous DNS client.
+const char kEnableAsyncDns[]                = "enable-async-dns";

[cbentzel, 2012/02/10 19:51:08]

Nit: Should be ordered after EnableAeroPeekTabs.

+
 // Enables AeroPeek for each tab. (This switch only works on Windows 7).
 const char kEnableAeroPeekTabs[]            = "enable-aero-peek-tabs";
 
 // Enables the inclusion of non-standard ports when generating the Kerberos SPN
 // in response to a Negotiate challenge. See
 // HttpAuthHandlerNegotiate::CreateSPN for more background.
 const char kEnableAuthNegotiatePort[]       = "enable-auth-negotiate-port";
 
 // With this flag set, Chrome will occasionally prompt the user to volunteer
 // Autofill usage data beyond what is collected by default. This is data that
@@ skipping 857 matching lines @@
 
 // -----------------------------------------------------------------------------
 // DO NOT ADD YOUR CRAP TO THE BOTTOM OF THIS FILE.
 //
 // You were going to just dump your switches here, weren't you? Instead, please
 // put them in alphabetical order above, or in order inside the appropriate
 // ifdef at the bottom. The order should match the header.
 // -----------------------------------------------------------------------------
 
 }  // namespace switches