Automatically trigger installation of high-quality speech synthesis extension.

chrome/browser/extensions/component_loader.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_BROWSER_EXTENSIONS_COMPONENT_LOADER_H_
 #define CHROME_BROWSER_EXTENSIONS_COMPONENT_LOADER_H_
 
 #include <string>
 #include <vector>
 
@@ skipping 98 matching lines @@
   // Loads a registered component extension.
   void Load(const ComponentExtensionInfo& info);
 
   void AddDefaultComponentExtensionsWithBackgroundPages(
       bool skip_session_components);
   void AddFileManagerExtension();
   void AddHangoutServicesExtension();
   void AddImageLoaderExtension();
   void AddBookmarksExtensions();
   void AddNetworkSpeechSynthesisExtension();
+  void AddChromeOsSpeechSynthesisExtension();
 
   void AddWithName(int manifest_resource_id,
                    const base::FilePath& root_directory,
                    const std::string& name);
   void AddChromeApp();
   void AddKeyboardApp();
   void AddWebStoreApp();
 
   // Unloads |component| from the memory.
   void UnloadComponent(ComponentExtensionInfo* component);
 
   PrefService* profile_prefs_;
   PrefService* local_state_;
 
   ExtensionServiceInterface* extension_service_;
 
   // List of registered component extensions (see Manifest::Location).
   typedef std::vector<ComponentExtensionInfo> RegisteredComponentExtensions;
   RegisteredComponentExtensions component_extensions_;
 
   FRIEND_TEST_ALL_PREFIXES(TtsApiTest, NetworkSpeechEngine);
   FRIEND_TEST_ALL_PREFIXES(TtsApiTest, NoNetworkSpeechEngineWhenOffline);
 
   DISALLOW_COPY_AND_ASSIGN(ComponentLoader);
 };
 
 }  // namespace extensions
 
 #endif  // CHROME_BROWSER_EXTENSIONS_COMPONENT_LOADER_H_