Flag-flip of app-list-voice-search. Now it's on by default.

ui/app_list/app_list_switches.cc

 // Copyright 2013 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 "ui/app_list/app_list_switches.h"
 
 #include "base/command_line.h"
 
 namespace app_list {
 namespace switches {
 
 // If set, folder will be enabled in app list UI.
 const char kEnableFolderUI[] = "enable-app-list-folder-ui";
 
-// If set, the voice search is enabled in app list UI.
-const char kEnableVoiceSearch[] = "enable-app-list-voice-search";
+// If set, the voice search is disabled in app list UI.
+const char kDisableVoiceSearch[] = "disable-app-list-voice-search";
 
 bool IsFolderUIEnabled() {
   return CommandLine::ForCurrentProcess()->HasSwitch(kEnableFolderUI);
 }
 
 }  // namespcae switches
 }  // namespace app_list