Convert ExtensionRegistry to a BrowserContextKeyedService

extensions/browser/extension_registry_factory.cc

+// Copyright 2013 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 "extensions/browser/extension_registry_factory.h"
+
+#include "components/browser_context_keyed_service/browser_context_dependency_manager.h"
+#include "extensions/browser/extension_registry.h"
+#include "extensions/browser/extensions_browser_client.h"
+
+using content::BrowserContext;
+
+namespace extensions {
+
+// static
+ExtensionRegistry* ExtensionRegistryFactory::GetForBrowserContext(
+      BrowserContext* context) {
+  return static_cast<ExtensionRegistry*>(
+      GetInstance()->GetServiceForBrowserContext(context, true));
+}
+
+// static
+ExtensionRegistryFactory* ExtensionRegistryFactory::GetInstance() {
+  return Singleton<ExtensionRegistryFactory>::get();
+}
+
+ExtensionRegistryFactory::ExtensionRegistryFactory()
+    : BrowserContextKeyedServiceFactory(
+          "ExtensionRegistry",
+          BrowserContextDependencyManager::GetInstance()) {
+  // No dependencies on other services.
+}
+
+ExtensionRegistryFactory::~ExtensionRegistryFactory() {}
+
+BrowserContextKeyedService* ExtensionRegistryFactory::BuildServiceInstanceFor(
+      content::BrowserContext* profile) const {
+  return new ExtensionRegistry;
+}
+
+BrowserContext* ExtensionRegistryFactory::GetBrowserContextToUse(
+      BrowserContext* context) const {
+  // Redirected in incognito.
+  return ExtensionsBrowserClient::Get()->GetOriginalContext(context);
+}
+
+}  // namespace extensions