Enable speech input by default and remove unused code.

chrome/common/chrome_switches.h

 // Copyright (c) 2011 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.
 
 // Defines all the command-line switches used by Chrome.
 
 #ifndef CHROME_COMMON_CHROME_SWITCHES_H_
 #define CHROME_COMMON_CHROME_SWITCHES_H_
 #pragma once
 
@@ skipping 156 matching lines @@
 extern const char kEnableNaCl[];
 extern const char kEnableNaClDebug[];
 extern const char kEnableP2PApi[];
 extern const char kEnablePreconnect[];
 extern const char kEnablePreparsedJsCaching[];
 extern const char kEnablePrintPreview[];
 extern const char kEnableRemoting[];
 extern const char kEnableResourceContentSettings[];
 extern const char kEnableSearchProviderApiV2[];
 extern const char kEnableSnapStart[];
-extern const char kEnableSpeechInput[];
 extern const char kEnableStatsTable[];
 extern const char kEnableSync[];
 extern const char kEnableSyncAutofill[];
 extern const char kEnableSyncPreferences[];
 extern const char kEnableSyncSessions[];
 extern const char kEnableSyncTypedUrls[];
 extern const char kEnableTcpFastOpen[];
 extern const char kEnableTopSites[];
 extern const char kEnableTouch[];
 extern const char kEnableVerticalTabs[];
@@ skipping 250 matching lines @@
 
 // Return true if the switches indicate the seccomp sandbox is enabled.
 bool SeccompSandboxEnabled();
 
 // DON'T ADD RANDOM STUFF HERE. Put it in the main section above in
 // alphabetical order, or in one of the ifdefs (also in order in each section).
 
 }  // namespace switches
 
 #endif  // CHROME_COMMON_CHROME_SWITCHES_H_