Add factory class for CertificateReportingService and a new metrics provider.

chrome/browser/safe_browsing/certificate_reporting_service_factory.cc

+// Copyright 2016 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/safe_browsing/certificate_reporting_service.h"
+#include "chrome/browser/safe_browsing/certificate_reporting_service_factory.h"
+#include "components/keyed_service/content/browser_context_dependency_manager.h"
+
+// static
+CertificateReportingServiceFactory*
+CertificateReportingServiceFactory::GetInstance() {
+  return base::Singleton<CertificateReportingServiceFactory>::get();
+}
+
+// static
+CertificateReportingService*
+CertificateReportingServiceFactory::GetForBrowserContext(
+    content::BrowserContext* context) {
+  return static_cast<CertificateReportingService*>(
+      GetInstance()->GetServiceForBrowserContext(context, true));
+}
+
+CertificateReportingServiceFactory::CertificateReportingServiceFactory()
+    : BrowserContextKeyedServiceFactory(
+          "cert_reporting::Factory",
+          BrowserContextDependencyManager::GetInstance()) {}
+
+CertificateReportingServiceFactory::~CertificateReportingServiceFactory() {}
+
+KeyedService* CertificateReportingServiceFactory::BuildServiceInstanceFor(
+    content::BrowserContext* profile) const {
+  return new CertificateReportingService();
+}
+
+content::BrowserContext*
+CertificateReportingServiceFactory::GetBrowserContextToUse(
+    content::BrowserContext* context) const {
+  return context;
+}