Hotword Private API: Add function and event to query the existence of a speaker model

chrome/browser/extensions/api/hotword_private/hotword_private_api.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/extensions/api/hotword_private/hotword_private_api.h"
 
 #include <string>
 
 #include "base/lazy_instance.h"
 #include "base/prefs/pref_service.h"
@@ skipping 84 matching lines @@
 }
 
 void HotwordPrivateEventService::OnHotwordTriggered() {
   SignalEvent(api::hotword_private::OnHotwordTriggered::kEventName);
 }
 
 void HotwordPrivateEventService::OnDeleteSpeakerModel() {
   SignalEvent(api::hotword_private::OnDeleteSpeakerModel::kEventName);
 }
 
+void HotwordPrivateEventService::OnSpeakerModelExists() {
+  SignalEvent(api::hotword_private::OnSpeakerModelExists::kEventName);
+}
+
 void HotwordPrivateEventService::SignalEvent(const std::string& event_name) {
   EventRouter* router = EventRouter::Get(profile_);
   if (!router || !router->HasEventListener(event_name))
     return;
   scoped_ptr<base::ListValue> args(new base::ListValue());
   scoped_ptr<Event> event(new Event(event_name, args.Pass()));
   router->BroadcastEvent(event.Pass());
 }
 
 bool HotwordPrivateSetEnabledFunction::RunSync() {
@@ skipping 331 matching lines @@
 
 void HotwordPrivateGetAudioHistoryEnabledFunction::SetResultAndSendResponse(
     bool success, bool new_enabled_value) {
   api::hotword_private::AudioHistoryState result;
   result.success = success;
   result.enabled = new_enabled_value;
   SetResult(result.ToValue().release());
   SendResponse(true);
 }
 
+bool HotwordPrivateSpeakerModelExistsResultFunction::RunSync() {
+  scoped_ptr<api::hotword_private::SpeakerModelExistsResult::Params> params(
+      api::hotword_private::SpeakerModelExistsResult::Params::Create(*args_));
+  EXTENSION_FUNCTION_VALIDATE(params.get());
+
+  HotwordService* hotword_service =
+      HotwordServiceFactory::GetForProfile(GetProfile());
+  if (!hotword_service)
+    return false;
+
+  hotword_service->SpeakerModelExistsComplete(params->exists);
+  return true;
+}
+
 }  // namespace extensions