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

chrome/common/extensions/extension_constants.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.
 
 #ifndef CHROME_COMMON_EXTENSIONS_EXTENSION_CONSTANTS_H_
 #define CHROME_COMMON_EXTENSIONS_EXTENSION_CONSTANTS_H_
 
 #include <string>
 
 #include "base/basictypes.h"
@@ skipping 239 matching lines @@
   // Path to preinstalled ChromeVox screen reader extension (relative to
   // |chrome::DIR_RESOURCES|).
   extern const char kChromeVoxExtensionPath[];
   // Path to preinstalled Connectivity Diagnostics extension.
   extern const char kConnectivityDiagnosticsPath[];
   extern const char kConnectivityDiagnosticsLauncherPath[];
   // Path to preinstalled speech synthesis extension.
   extern const char kSpeechSynthesisExtensionPath[];
   // The extension id of the speech synthesis extension.
   extern const char kSpeechSynthesisExtensionId[];
-  // The extension id of the high quality speech synthesis extension for
-  // en-US, which can be installed automatically from the web store.
-  extern const char kHighQuality_en_US_ExtensionId[];
   // The extension id of the wallpaper manager application.
   extern const char kWallpaperManagerId[];
   // The extension id of the first run dialog application.
   extern const char kFirstRunDialogId[];
 #endif
 
   // What causes an extension to be installed? Used in histograms, so don't
   // change existing values.
   enum CrxInstallCause {
     INSTALL_CAUSE_UNSET = 0,
@@ skipping 66 matching lines @@
     LAUNCH_CONTAINER_WINDOW,
     LAUNCH_CONTAINER_PANEL,
     LAUNCH_CONTAINER_TAB,
     // For platform apps, which don't actually have a container (they just get a
     // "onLaunched" event).
     LAUNCH_CONTAINER_NONE
   };
 }  // namespace extensions
 
 #endif  // CHROME_COMMON_EXTENSIONS_EXTENSION_CONSTANTS_H_