Remove the flag for the Speech API and turn it on by default.

content/public/common/content_switches.h

 // 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.
 
 // Defines all the "content" command-line switches.
 
 #ifndef CONTENT_PUBLIC_COMMON_CONTENT_SWITCHES_H_
 #define CONTENT_PUBLIC_COMMON_CONTENT_SWITCHES_H_
 
 #include "build/build_config.h"
@@ skipping 58 matching lines @@
 CONTENT_EXPORT extern const char kDisablePlugins[];
 extern const char kDisableRemoteFonts[];
 extern const char kDisableRendererAccessibility[];
 extern const char kDisableSSLFalseStart[];
 extern const char kDisableSeccompSandbox[];
 extern const char kDisableSeccompFilterSandbox[];
 extern const char kDisableSessionStorage[];
 extern const char kDisableSharedWorkers[];
 extern const char kDisableSiteSpecificQuirks[];
 CONTENT_EXPORT extern const char kDisableSpeechInput[];
-CONTENT_EXPORT extern const char kEnableScriptedSpeech[];
 extern const char kSpeechRecognitionWebserviceKey[];
 #if defined(OS_ANDROID)
 CONTENT_EXPORT extern const char kEnableWebAudio[];
 #else
 CONTENT_EXPORT extern const char kDisableWebAudio[];
 #endif
 extern const char kDisableWebSecurity[];
 extern const char kDisableWebSockets[];
 extern const char kDisableXSSAuditor[];
 CONTENT_EXPORT extern const char kDomAutomationController[];
@@ skipping 146 matching lines @@
 CONTENT_EXPORT extern const char kFlingTapSuppressMaxDown[];
 CONTENT_EXPORT extern const char kFlingTapSuppressMaxGap[];
 CONTENT_EXPORT extern const char kTestCompositor[];
 #endif
 
 CONTENT_EXPORT extern const char kEnableOverscrollHistoryNavigation[];
 
 }  // namespace switches
 
 #endif  // CONTENT_PUBLIC_COMMON_CONTENT_SWITCHES_H_