Componentize MetricsServicesManager

chrome/browser/metrics/metrics_services_manager_client.h

-// Copyright 2015 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_METRICS_METRICS_SERVICES_MANAGER_CLIENT_H_
-#define CHROME_BROWSER_METRICS_METRICS_SERVICES_MANAGER_CLIENT_H_
-
-#include "base/basictypes.h"
-#include "base/callback.h"
-#include "base/memory/scoped_ptr.h"
-#include "base/threading/thread_checker.h"
-
-namespace metrics {
-class MetricsService;
-class MetricsServiceClient;
-}
-
-namespace net {
-class URLRequestContextGetter;
-}
-
-namespace rappor {
-class RapporService;
-}
-
-namespace variations {
-class VariationsService;
-}
-
-// MetricsServicesManagerClient is an interface that allows
-// MetricsServicesManager to interact with its embedder.
-class MetricsServicesManagerClient {
- public:
-  virtual ~MetricsServicesManagerClient() {}
-
-  // Methods that create the various services in the context of the embedder.
-  virtual scoped_ptr<rappor::RapporService> CreateRapporService() = 0;
-  virtual scoped_ptr<variations::VariationsService>
-  CreateVariationsService() = 0;
-  virtual scoped_ptr<metrics::MetricsServiceClient>
-  CreateMetricsServiceClient() = 0;
-
-  // Returns the URL request context in which the metrics services should
-  // operate.
-  virtual net::URLRequestContextGetter* GetURLRequestContext() = 0;
-
-  // Returns whether safe browsing is enabled. If relevant in the embedder's
-  // context, |on_update_callback| will be set up to be called when the state of
-  // safe browsing changes. |on_update_callback| is guaranteed to be valid for
-  // the lifetime of this client instance, but should not be used beyond this
-  // instance being destroyed.
-  virtual bool IsSafeBrowsingEnabled(
-      const base::Closure& on_update_callback) = 0;
-
-  // Returns whether metrics reporting is enabled.
-  virtual bool IsMetricsReportingEnabled() = 0;
-
-  // Whether the metrics services should record but not report metrics.
-  virtual bool OnlyDoMetricsRecording() = 0;
-};
-
-#endif  // CHROME_BROWSER_METRICS_METRICS_SERVICES_MANAGER_CLIENT_H_