Move base to DEPS

base/metrics/statistics_recorder.h

Index: base/metrics/statistics_recorder.h
diff --git a/base/metrics/statistics_recorder.h b/base/metrics/statistics_recorder.h
deleted file mode 100644
index 729f230707f51311c5bb8a50e92024abc45032b8..0000000000000000000000000000000000000000
--- a/base/metrics/statistics_recorder.h
+++ /dev/null
@@ -1,156 +0,0 @@
-// 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.
-
-// StatisticsRecorder holds all Histograms and BucketRanges that are used by
-// Histograms in the system. It provides a general place for
-// Histograms/BucketRanges to register, and supports a global API for accessing
-// (i.e., dumping, or graphing) the data.
-
-#ifndef BASE_METRICS_STATISTICS_RECORDER_H_
-#define BASE_METRICS_STATISTICS_RECORDER_H_
-
-#include <list>
-#include <map>
-#include <string>
-#include <vector>
-
-#include "base/base_export.h"
-#include "base/basictypes.h"
-#include "base/callback.h"
-#include "base/gtest_prod_util.h"
-#include "base/lazy_instance.h"
-#include "base/metrics/histogram_base.h"
-
-namespace base {
-
-class BucketRanges;
-class Lock;
-
-class BASE_EXPORT StatisticsRecorder {
- public:
-  typedef std::vector<HistogramBase*> Histograms;
-
-  // Initializes the StatisticsRecorder system. Safe to call multiple times.
-  static void Initialize();
-
-  // Find out if histograms can now be registered into our list.
-  static bool IsActive();
-
-  // Register, or add a new histogram to the collection of statistics. If an
-  // identically named histogram is already registered, then the argument
-  // |histogram| will deleted.  The returned value is always the registered
-  // histogram (either the argument, or the pre-existing registered histogram).
-  static HistogramBase* RegisterOrDeleteDuplicate(HistogramBase* histogram);
-
-  // Register, or add a new BucketRanges. If an identically BucketRanges is
-  // already registered, then the argument |ranges| will deleted. The returned
-  // value is always the registered BucketRanges (either the argument, or the
-  // pre-existing one).
-  static const BucketRanges* RegisterOrDeleteDuplicateRanges(
-      const BucketRanges* ranges);
-
-  // Methods for appending histogram data to a string.  Only histograms which
-  // have |query| as a substring are written to |output| (an empty string will
-  // process all registered histograms).
-  static void WriteHTMLGraph(const std::string& query, std::string* output);
-  static void WriteGraph(const std::string& query, std::string* output);
-
-  // Returns the histograms with |query| as a substring as JSON text (an empty
-  // |query| will process all registered histograms).
-  static std::string ToJSON(const std::string& query);
-
-  // Method for extracting histograms which were marked for use by UMA.
-  static void GetHistograms(Histograms* output);
-
-  // Method for extracting BucketRanges used by all histograms registered.
-  static void GetBucketRanges(std::vector<const BucketRanges*>* output);
-
-  // Find a histogram by name. It matches the exact name. This method is thread
-  // safe.  It returns NULL if a matching histogram is not found.
-  static HistogramBase* FindHistogram(const std::string& name);
-
-  // GetSnapshot copies some of the pointers to registered histograms into the
-  // caller supplied vector (Histograms). Only histograms which have |query| as
-  // a substring are copied (an empty string will process all registered
-  // histograms).
-  static void GetSnapshot(const std::string& query, Histograms* snapshot);
-
-  typedef base::Callback<void(HistogramBase::Sample)> OnSampleCallback;
-
-  // SetCallback sets the callback to notify when a new sample is recorded on
-  // the histogram referred to by |histogram_name|. The call to this method can
-  // be be done before or after the histogram is created. This method is thread
-  // safe. The return value is whether or not the callback was successfully set.
-  static bool SetCallback(const std::string& histogram_name,
-                          const OnSampleCallback& callback);
-
-  // ClearCallback clears any callback set on the histogram referred to by
-  // |histogram_name|. This method is thread safe.
-  static void ClearCallback(const std::string& histogram_name);
-
-  // FindCallback retrieves the callback for the histogram referred to by
-  // |histogram_name|, or a null callback if no callback exists for this
-  // histogram. This method is thread safe.
-  static OnSampleCallback FindCallback(const std::string& histogram_name);
-
- private:
-  // HistogramNameRef holds a weak const ref to the name field of the associated
-  // Histogram object, allowing re-use of the underlying string storage for the
-  // map keys. The wrapper is required as using "const std::string&" as the key
-  // results in compile errors.
-  struct HistogramNameRef {
-    explicit HistogramNameRef(const std::string& name) : name_(name){};
-
-    // Operator < is necessary to use this type as a std::map key.
-    bool operator<(const HistogramNameRef& other) const {
-      return name_ < other.name_;
-    }
-
-    // Weak, owned by the associated Histogram object.
-    const std::string& name_;
-  };
-
-  // We keep all registered histograms in a map, from name to histogram.
-  typedef std::map<HistogramNameRef, HistogramBase*> HistogramMap;
-
-  // We keep a map of callbacks to histograms, so that as histograms are
-  // created, we can set the callback properly.
-  typedef std::map<std::string, OnSampleCallback> CallbackMap;
-
-  // We keep all |bucket_ranges_| in a map, from checksum to a list of
-  // |bucket_ranges_|.  Checksum is calculated from the |ranges_| in
-  // |bucket_ranges_|.
-  typedef std::map<uint32, std::list<const BucketRanges*>*> RangesMap;
-
-  friend struct DefaultLazyInstanceTraits<StatisticsRecorder>;
-  friend class HistogramBaseTest;
-  friend class HistogramSnapshotManagerTest;
-  friend class HistogramTest;
-  friend class JsonPrefStoreTest;
-  friend class SparseHistogramTest;
-  friend class StatisticsRecorderTest;
-  FRIEND_TEST_ALL_PREFIXES(HistogramDeltaSerializationTest,
-                           DeserializeHistogramAndAddSamples);
-
-  // The constructor just initializes static members. Usually client code should
-  // use Initialize to do this. But in test code, you can friend this class and
-  // call destructor/constructor to get a clean StatisticsRecorder.
-  StatisticsRecorder();
-  ~StatisticsRecorder();
-
-  static void DumpHistogramsToVlog(void* instance);
-
-  static HistogramMap* histograms_;
-  static CallbackMap* callbacks_;
-  static RangesMap* ranges_;
-
-  // Lock protects access to above maps.
-  static base::Lock* lock_;
-
-  DISALLOW_COPY_AND_ASSIGN(StatisticsRecorder);
-};
-
-}  // namespace base
-
-#endif  // BASE_METRICS_STATISTICS_RECORDER_H_