chrome.mdns API

chrome/browser/extensions/api/mdns/mdns_api_factory.h

+// 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.
+
+#ifndef CHROME_BROWSER_EXTENSIONS_API_MDNS_MDNS_API_FACTORY_H_
+#define CHROME_BROWSER_EXTENSIONS_API_MDNS_MDNS_API_FACTORY_H_
+
+#include "base/memory/singleton.h"
+#include "components/browser_context_keyed_service/browser_context_keyed_service_factory.h"
+
+class Profile;
+
+// TODO(justinlin): Evaluate if NSD Registry can be the singleton instead.

[mark a. foltz, 2013/08/27 00:35:42]

I think the factory is okay as a singleton since it produces instances for any
profile...?

[justinlin, 2013/08/27 01:50:20]

I was thinking of making NsdRegistry a singleton for the whole browser instead
of per-profile, but I'm not sure how that would work out yet. Just using MDnsApi
as an owner to NsdRegistry should be fine for now.

+
+namespace extensions {
+
+class MDnsAPI;
+
+class MDnsAPIFactory : public BrowserContextKeyedServiceFactory {
+ public:
+  static MDnsAPI* GetForProfile(Profile* profile);
+
+  static MDnsAPIFactory* GetInstance();
+
+ private:
+  friend struct DefaultSingletonTraits<MDnsAPIFactory>;
+
+  MDnsAPIFactory();
+  virtual ~MDnsAPIFactory();
+
+  // BrowserContextKeyedServiceFactory:
+  virtual BrowserContextKeyedService *BuildServiceInstanceFor(
+      content::BrowserContext* profile) const OVERRIDE;
+  virtual bool ServiceIsCreatedWithBrowserContext() const OVERRIDE;
+  virtual bool ServiceIsNULLWhileTesting() const OVERRIDE;
+
+  DISALLOW_COPY_AND_ASSIGN(MDnsAPIFactory);
+};
+
+}  // namespace extensions
+
+#endif  // CHROME_BROWSER_EXTENSIONS_API_MDNS_MDNS_API_FACTORY_H_