Convert ProtocolHandlerRegistry to be a ProfileKeyedService.

chrome/browser/custom_handlers/protocol_handler_registry_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_CUSTOM_HANDLERS_PROTOCOL_HANDLER_REGISTRY_FACTORY_H_
+#define CHROME_BROWSER_CUSTOM_HANDLERS_PROTOCOL_HANDLER_REGISTRY_FACTORY_H_
+
+#include "base/basictypes.h"
+#include "base/compiler_specific.h"
+#include "chrome/browser/custom_handlers/protocol_handler_registry.h"
+#include "chrome/browser/profiles/profile_keyed_service_factory.h"
+
+class Profile;
+class ProtocolHandlerRegistry;
+template <typename T> struct DefaultSingletonTraits;
+
+// Singleton that owns all ProtocolHandlerRegistrys and associates them with
+// Profiles. Listens for the Profile's destruction notification and cleans up
+// the associated ProtocolHandlerRegistry.
+class ProtocolHandlerRegistryFactory : public ProfileKeyedServiceFactory {
+ public:
+
+  // Returns the singleton instance of the ProtocolHandlerRegistryFactory.
+  static ProtocolHandlerRegistryFactory* GetInstance();
+
+  // Returns the ProtocolHandlerRegistry that provides intent registration for
+  // |profile|. Ownership stays with this factory object.
+  static ProtocolHandlerRegistry* GetForProfile(Profile* profile);
+
+ private:
+  friend struct DefaultSingletonTraits<ProtocolHandlerRegistryFactory>;
+
+  ProtocolHandlerRegistryFactory();
+  virtual ~ProtocolHandlerRegistryFactory();
+
+  // ProfileKeyedServiceFactory implementation.
+  virtual ProfileKeyedService* BuildServiceInstanceFor(
+      Profile* profile) const OVERRIDE;
+
+  DISALLOW_COPY_AND_ASSIGN(ProtocolHandlerRegistryFactory);
+};
+
+#endif  // CHROME_BROWSER_CUSTOM_HANDLERS_PROTOCOL_HANDLER_REGISTRY_FACTORY_H_