Move base to DEPS

base/metrics/histogram_flattener.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 BASE_METRICS_HISTOGRAM_FLATTENER_H_
-#define BASE_METRICS_HISTOGRAM_FLATTENER_H_
-
-#include <map>
-#include <string>
-
-#include "base/basictypes.h"
-#include "base/metrics/histogram.h"
-
-namespace base {
-
-class HistogramSamples;
-
-// HistogramFlattener is an interface used by HistogramSnapshotManager, which
-// handles the logistics of gathering up available histograms for recording.
-// The implementors handle the exact lower level recording mechanism, or
-// error report mechanism.
-class BASE_EXPORT HistogramFlattener {
- public:
-  virtual void RecordDelta(const HistogramBase& histogram,
-                           const HistogramSamples& snapshot) = 0;
-
-  // Will be called each time a type of Inconsistency is seen on a histogram,
-  // during inspections done internally in HistogramSnapshotManager class.
-  virtual void InconsistencyDetected(HistogramBase::Inconsistency problem) = 0;
-
-  // Will be called when a type of Inconsistency is seen for the first time on
-  // a histogram.
-  virtual void UniqueInconsistencyDetected(
-      HistogramBase::Inconsistency problem) = 0;
-
-  // Will be called when the total logged sample count of a histogram
-  // differs from the sum of logged sample count in all the buckets.  The
-  // argument |amount| is the non-zero discrepancy.
-  virtual void InconsistencyDetectedInLoggedCount(int amount) = 0;
-
- protected:
-  HistogramFlattener() {}
-  virtual ~HistogramFlattener() {}
-
- private:
-  DISALLOW_COPY_AND_ASSIGN(HistogramFlattener);
-};
-
-}  // namespace base
-
-#endif  // BASE_METRICS_HISTOGRAM_FLATTENER_H_