Make profile statistics tasks inspectable by tests

chrome/browser/profiles/profile_statistics_factory.cc

+// Copyright (c) 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/profiles/profile_statistics_factory.h"
+
+#include "base/memory/singleton.h"
+#include "chrome/browser/profiles/profile.h"
+#include "chrome/browser/profiles/profile_statistics.h"
+#include "components/keyed_service/content/browser_context_dependency_manager.h"
+#include "content/public/browser/browser_thread.h"
+
+// static
+ProfileStatistics* ProfileStatisticsFactory::GetForProfile(Profile* profile) {
+  return static_cast<ProfileStatistics*>(
+      GetInstance()->GetServiceForBrowserContext(profile, true));
+}
+
+// static
+ProfileStatisticsFactory* ProfileStatisticsFactory::GetInstance() {
+  return base::Singleton<ProfileStatisticsFactory>::get();
+}
+
+ProfileStatisticsFactory::ProfileStatisticsFactory()
+    : BrowserContextKeyedServiceFactory("ProfileStatistics",
+        BrowserContextDependencyManager::GetInstance()) {
+}
+
+KeyedService* ProfileStatisticsFactory::BuildServiceInstanceFor(
+    content::BrowserContext* context) const {
+  Profile* profile = Profile::FromBrowserContext(context);
+  return new ProfileStatistics(profile);
+}