Revert "Automatically trigger installation of high-quality speech synthesis extension."

chrome/common/pref_names.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.
 
 // Constants for the names of various preferences, for easier changing.
 
 #ifndef CHROME_COMMON_PREF_NAMES_H_
 #define CHROME_COMMON_PREF_NAMES_H_
 
 #include <stddef.h>
@@ skipping 258 matching lines @@
 extern const char kUsedPolicyCertificatesOnce[];
 extern const char kAttestationEnabled[];
 extern const char kAttestationExtensionWhitelist[];
 extern const char kTouchHudProjectionEnabled[];
 extern const char kOpenNetworkConfiguration[];
 extern const char kRAConsentFirstTime[];
 extern const char kMultiProfileNeverShowIntro[];
 extern const char kMultiProfileWarningShowDismissed[];
 extern const char kMultiProfileNotificationDismissed[];
 extern const char kMultiProfileUserBehavior[];
-extern const char kHighQualitySpeechSynthesisLanguages[];
 extern const char kFirstRunTutorialShown[];
 extern const char kSAMLOfflineSigninTimeLimit[];
 extern const char kSAMLLastGAIASignInTime[];
 #endif  // defined(OS_CHROMEOS)
 extern const char kIpcDisabledMessages[];
 extern const char kShowHomeButton[];
 extern const char kRecentlySelectedEncoding[];
 extern const char kDeleteBrowsingHistory[];
 extern const char kDeleteDownloadHistory[];
 extern const char kDeleteCache[];
@@ skipping 647 matching lines @@
 #if defined(OS_WIN)
 extern const char kOsPasswordBlank[];
 extern const char kOsPasswordLastChanged[];
 #endif
 
 extern const char kQuickCheckEnabled[];
 
 }  // namespace prefs
 
 #endif  // CHROME_COMMON_PREF_NAMES_H_