Automatically trigger installation of high-quality speech synthesis extension.

chrome/browser/extensions/component_loader.cc

 // 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.
 
 #include "chrome/browser/extensions/component_loader.h"
 
 #include <map>
 #include <string>
 
 #include "base/command_line.h"
@@ skipping 303 matching lines @@
   Add(IDR_ENHANCED_BOOKMARKS_MANIFEST,
       base::FilePath(FILE_PATH_LITERAL("enhanced_bookmark_manager")));
 #endif
 }
 
 void ComponentLoader::AddNetworkSpeechSynthesisExtension() {
   Add(IDR_NETWORK_SPEECH_SYNTHESIS_MANIFEST,
       base::FilePath(FILE_PATH_LITERAL("network_speech_synthesis")));
 }
 
+void ComponentLoader::AddChromeOsSpeechSynthesisExtension() {
+  Add(IDR_SPEECH_SYNTHESIS_MANIFEST,
+      base::FilePath(extension_misc::kSpeechSynthesisExtensionPath));
+}
+
 void ComponentLoader::AddWithName(int manifest_resource_id,
                                   const base::FilePath& root_directory,
                                   const std::string& name) {
   std::string manifest_contents =
       ResourceBundle::GetSharedInstance().GetRawDataResource(
           manifest_resource_id).as_string();
 
   // The Value is kept for the lifetime of the ComponentLoader. This is
   // required in case LoadAll() is called again.
   base::DictionaryValue* manifest = ParseManifest(manifest_contents);
@@ skipping 219 matching lines @@
     Add(IDR_GOOGLE_NOW_MANIFEST,
         base::FilePath(FILE_PATH_LITERAL("google_now")));
   }
 #endif
 
 #if defined(GOOGLE_CHROME_BUILD)
 #if !defined(OS_CHROMEOS)  // http://crbug.com/314799
   AddNetworkSpeechSynthesisExtension();
 #endif
 #endif  // defined(GOOGLE_CHROME_BUILD)
+#if defined(OS_CHROMEOS)
+  AddChromeOsSpeechSynthesisExtension();
+#endif  // defined(OS_CHROMEOS)
 }
 
 void ComponentLoader::UnloadComponent(ComponentExtensionInfo* component) {
   delete component->manifest;
   if (extension_service_->is_ready()) {
     extension_service_->
         RemoveComponentExtension(component->extension_id);
   }
 }
 
 }  // namespace extensions