Make MediaPlayerEventRouter a PKS to decouple it from ExtensionService

chrome/browser/chromeos/extensions/media_player_api_factory.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/chromeos/extensions/media_player_api_factory.h"
+
+#include "chrome/browser/chromeos/extensions/media_player_api.h"
+#include "chrome/browser/extensions/extension_system_factory.h"
+#include "chrome/browser/profiles/profile_dependency_manager.h"
+
+namespace extensions {
+
+// static
+MediaPlayerAPI* MediaPlayerAPIFactory::GetForProfile(Profile* profile) {
+  return static_cast<MediaPlayerAPI*>(
+      GetInstance()->GetServiceForProfile(profile, true));
+}
+
+// static
+MediaPlayerAPIFactory* MediaPlayerAPIFactory::GetInstance() {
+  return Singleton<MediaPlayerAPIFactory>::get();
+}
+
+MediaPlayerAPIFactory::MediaPlayerAPIFactory()
+    : ProfileKeyedServiceFactory("MediaPlayerAPI",
+                                 ProfileDependencyManager::GetInstance()) {
+  DependsOn(extensions::ExtensionSystemFactory::GetInstance());
+}
+
+MediaPlayerAPIFactory::~MediaPlayerAPIFactory() {
+}
+
+ProfileKeyedService* MediaPlayerAPIFactory::BuildServiceInstanceFor(
+    Profile* profile) const {
+  return new MediaPlayerAPI(profile);
+}
+
+bool MediaPlayerAPIFactory::ServiceIsCreatedWithProfile() const {
+  return true;
+}
+
+bool MediaPlayerAPIFactory::ServiceIsNULLWhileTesting() const {
+  return true;
+}
+
+}  // namespace extensions