[Metrics] Merge MetricsService and MetricsServiceBase classes.

chrome/common/metrics/metrics_service_base.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_COMMON_METRICS_METRICS_SERVICE_BASE_H_
-#define CHROME_COMMON_METRICS_METRICS_SERVICE_BASE_H_
-
-#include "base/basictypes.h"
-#include "base/metrics/histogram_base.h"
-#include "base/metrics/histogram_flattener.h"
-#include "base/metrics/histogram_snapshot_manager.h"
-#include "components/metrics/metrics_log_manager.h"
-
-namespace base {
-class HistogramSamples;
-}  // namespace base
-
-// This class provides base functionality for logging metrics data.
-// TODO(ananta): Factor out more common code from chrome and chrome frame
-// metrics service into this class.
-class MetricsServiceBase : public base::HistogramFlattener {
- public:
-  // HistogramFlattener interface (override) methods.
-  virtual void RecordDelta(const base::HistogramBase& histogram,
-                           const base::HistogramSamples& snapshot) OVERRIDE;
-  virtual void InconsistencyDetected(
-      base::HistogramBase::Inconsistency problem) OVERRIDE;
-  virtual void UniqueInconsistencyDetected(
-      base::HistogramBase::Inconsistency problem) OVERRIDE;
-  virtual void InconsistencyDetectedInLoggedCount(int amount) OVERRIDE;
-
- protected:
-  // The metrics service will persist it's unsent logs by storing them in
-  // |local_state|, and will not persist ongoing logs over
-  // |max_ongoing_log_size|.
-  MetricsServiceBase(PrefService* local_state, size_t max_ongoing_log_size);
-  virtual ~MetricsServiceBase();
-
-  // The metrics server's URL.
-  static const char kServerUrl[];
-
-  // The MIME type for the uploaded metrics data.
-  static const char kMimeType[];
-
-  // Record complete list of histograms into the current log.
-  // Called when we close a log.
-  void RecordCurrentHistograms();
-
-  // Record complete list of stability histograms into the current log,
-  // i.e., histograms with the |kUmaStabilityHistogramFlag| flag set.
-  void RecordCurrentStabilityHistograms();
-
-  // Manager for the various in-flight logs.
-  metrics::MetricsLogManager log_manager_;
-
- private:
-  // |histogram_snapshot_manager_| prepares histogram deltas for transmission.
-  base::HistogramSnapshotManager histogram_snapshot_manager_;
-
-  DISALLOW_COPY_AND_ASSIGN(MetricsServiceBase);
-};
-
-#endif  // CHROME_COMMON_METRICS_METRICS_SERVICE_BASE_H_