Hotword Audio Verification App: Adds to hotwordPrivate API

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 "base/command_line.h"
 #include "base/lazy_instance.h"
 #include "base/prefs/pref_service.h"
 #include "chrome/browser/profiles/profile.h"
 #include "chrome/browser/search/hotword_client.h"
 #include "chrome/browser/search/hotword_service.h"
 #include "chrome/browser/search/hotword_service_factory.h"
 #include "chrome/common/chrome_switches.h"
 #include "chrome/common/pref_names.h"
 #include "extensions/browser/event_router.h"
 
 namespace extensions {
 
+namespace hotword_private_constants {
+const char kHotwordServiceUnavailable[] = "Hotword Service is unavailable.";
+}  // hotword_private_constants
+
 namespace OnEnabledChanged =
     api::hotword_private::OnEnabledChanged;
 
 static base::LazyInstance<
     BrowserContextKeyedAPIFactory<HotwordPrivateEventService> > g_factory =
     LAZY_INSTANCE_INITIALIZER;
 
 HotwordPrivateEventService::HotwordPrivateEventService(
     content::BrowserContext* context)
     : profile_(Profile::FromBrowserContext(context)) {
@@ skipping 108 matching lines @@
 }
 
 bool HotwordPrivateNotifyHotwordRecognitionFunction::RunSync() {
   HotwordService* hotword_service =
       HotwordServiceFactory::GetForProfile(GetProfile());
   if (hotword_service && hotword_service->client())
     hotword_service->client()->OnHotwordRecognized();
   return true;
 }
 
+bool HotwordPrivateGetLaunchStateFunction::RunSync() {
+  api::hotword_private::LaunchState result;
+
+  HotwordService* hotword_service =
+      HotwordServiceFactory::GetForProfile(GetProfile());
+  if (!hotword_service) {
+    error_ = hotword_private_constants::kHotwordServiceUnavailable;
+    return false;
+  } else {
+    result.launch_mode =
+        hotword_service->GetHotwordAudioVerificationLaunchMode();
+  }
+
+  SetResult(result.ToValue().release());
+  return true;
+}
+
 }  // namespace extensions