Adds HotwordPrivate API for integrating the hotword feature to AppLauncher

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/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/pref_names.h"
 #include "extensions/browser/event_router.h"
 
 namespace extensions {
 
 namespace OnEnabledChanged =
     api::hotword_private::OnEnabledChanged;
 
@@ skipping 24 matching lines @@
 }
 
 // static
 const char* HotwordPrivateEventService::service_name() {
   return "HotwordPrivateEventService";
 }
 
 void HotwordPrivateEventService::OnEnabledChanged(
     const std::string& pref_name) {
   DCHECK_EQ(pref_name, std::string(prefs::kHotwordSearchEnabled));
-  SignalEvent();
+  SignalEvent(OnEnabledChanged::kEventName);
 }
 
-void HotwordPrivateEventService::SignalEvent() {
-  using OnEnabledChanged::kEventName;
+void HotwordPrivateEventService::OnHotwordSessionRequested() {
+  SignalEvent(api::hotword_private::OnHotwordSessionRequested::kEventName);
+}
 
+void HotwordPrivateEventService::OnHotwordSessionStopped() {
+  SignalEvent(api::hotword_private::OnHotwordSessionStopped::kEventName);
+}
+
+void HotwordPrivateEventService::SignalEvent(const std::string& event_name) {
   EventRouter* router = EventRouter::Get(profile_);
-  if (!router || !router->HasEventListener(kEventName))
+  if (!router || !router->HasEventListener(event_name))
     return;
   scoped_ptr<base::ListValue> args(new base::ListValue());
-  scoped_ptr<Event> event(new Event(kEventName, args.Pass()));
+  scoped_ptr<Event> event(new Event(event_name, args.Pass()));
   router->BroadcastEvent(event.Pass());
 }
 
 bool HotwordPrivateSetEnabledFunction::RunSync() {
   scoped_ptr<api::hotword_private::SetEnabled::Params> params(
       api::hotword_private::SetEnabled::Params::Create(*args_));
   EXTENSION_FUNCTION_VALIDATE(params.get());
 
   PrefService* prefs = GetProfile()->GetPrefs();
   prefs->SetBoolean(prefs::kHotwordSearchEnabled, params->state);
@@ skipping 24 matching lines @@
   result.enabled_set = prefs->HasPrefPath(prefs::kHotwordSearchEnabled);
   result.enabled = prefs->GetBoolean(prefs::kHotwordSearchEnabled);
   result.audio_logging_enabled = false;
   if (hotword_service)
     result.audio_logging_enabled = hotword_service->IsOptedIntoAudioLogging();
 
   SetResult(result.ToValue().release());
   return true;
 }
 
+bool HotwordPrivateSetHotwordSessionStateFunction::RunSync() {
+  scoped_ptr<api::hotword_private::SetHotwordSessionState::Params> params(
+      api::hotword_private::SetHotwordSessionState::Params::Create(*args_));
+  EXTENSION_FUNCTION_VALIDATE(params.get());
+
+  HotwordService* hotword_service =
+      HotwordServiceFactory::GetForProfile(GetProfile());
+  if (hotword_service && hotword_service->client())
+    hotword_service->client()->OnHotwordStateChanged(params->started);
+  return true;
+}
+
+bool HotwordPrivateNotifyHotwordRecognitionFunction::RunSync() {
+  HotwordService* hotword_service =
+      HotwordServiceFactory::GetForProfile(GetProfile());
+  if (hotword_service && hotword_service->client())
+    hotword_service->client()->OnHotwordRecognized();
+  return true;
+}
+
 }  // namespace extensions