struct UnloadedExtensionInfo -> enum UnloadedExtensionInfoReason

chrome/browser/speech/extension_api/tts_engine_extension_observer.cc

 // Copyright 2014 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/speech/extension_api/tts_engine_extension_observer.h"
 
 #include "base/logging.h"
 #include "base/memory/singleton.h"
 #include "chrome/browser/extensions/extension_service.h"
 #include "chrome/browser/profiles/incognito_helpers.h"
@@ skipping 101 matching lines @@
   if (!IsLoadedTtsEngine(details.extension_id))
     return;
 
   TtsController::GetInstance()->VoicesChanged();
   engine_extension_ids_.insert(details.extension_id);
 }
 
 void TtsEngineExtensionObserver::OnExtensionUnloaded(
     content::BrowserContext* browser_context,
     const extensions::Extension* extension,
-    extensions::UnloadedExtensionInfo::Reason reason) {
+    extensions::UnloadedExtensionReason reason) {
   if (engine_extension_ids_.find(extension->id()) !=
       engine_extension_ids_.end()) {
     engine_extension_ids_.erase(extension->id());
     TtsController::GetInstance()->VoicesChanged();
   }
 }