chrome: remove --disable-async-dns switch

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"
 #include "build/build_config.h"
 
@@ skipping 155 matching lines @@
 const char kDiagnosticsRecovery[]           = "diagnostics-recovery";
 
 // When kEnableSettingsWindow is used, About is shown as an overlay in Settings
 // instead of as a separate page, unless this flag is specified.
 const char kDisableAboutInSettings[]        = "disable-about-in-settings";
 
 // Disables the display of a banner allowing the user to add a web
 // app to their shelf (or platform-specific equivalent)
 const char kDisableAddToShelf[] = "disable-add-to-shelf";
 
-// Disables the experimental asynchronous DNS client.
-const char kDisableAsyncDns[]               = "disable-async-dns";
-
 // Disable several subsystems which run network requests in the background.
 // This is for use when doing network performance testing to avoid noise in the
 // measurements.
 const char kDisableBackgroundNetworking[]   = "disable-background-networking";
 
 // Disables the bundled PPAPI version of Flash.
 const char kDisableBundledPpapiFlash[]      = "disable-bundled-ppapi-flash";
 
 // Disable hardware encoding support for Cast Streaming.
 const char kDisableCastStreamingHWEncoding[] =
@@ skipping 1152 matching lines @@
 
 // -----------------------------------------------------------------------------
 // DO NOT ADD YOUR VERY NICE FLAGS 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