replace 'virtual ... OVERRIDE' with '... override'

base/metrics/sparse_histogram.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_SPARSE_HISTOGRAM_H_
 #define BASE_METRICS_SPARSE_HISTOGRAM_H_
 
 #include <map>
 #include <string>
 
@@ skipping 19 matching lines @@
 
 class BASE_EXPORT_PRIVATE SparseHistogram : public HistogramBase {
  public:
   // If there's one with same name, return the existing one. If not, create a
   // new one.
   static HistogramBase* FactoryGet(const std::string& name, int32 flags);
 
   virtual ~SparseHistogram();
 
   // HistogramBase implementation:
-  virtual HistogramType GetHistogramType() const OVERRIDE;
-  virtual bool HasConstructionArguments(
-      Sample expected_minimum,
-      Sample expected_maximum,
-      size_t expected_bucket_count) const OVERRIDE;
-  virtual void Add(Sample value) OVERRIDE;
-  virtual void AddSamples(const HistogramSamples& samples) OVERRIDE;
-  virtual bool AddSamplesFromPickle(PickleIterator* iter) OVERRIDE;
-  virtual scoped_ptr<HistogramSamples> SnapshotSamples() const OVERRIDE;
-  virtual void WriteHTMLGraph(std::string* output) const OVERRIDE;
-  virtual void WriteAscii(std::string* output) const OVERRIDE;
+  HistogramType GetHistogramType() const override;
+  bool HasConstructionArguments(Sample expected_minimum,
+                                Sample expected_maximum,
+                                size_t expected_bucket_count) const override;
+  void Add(Sample value) override;
+  void AddSamples(const HistogramSamples& samples) override;
+  bool AddSamplesFromPickle(PickleIterator* iter) override;
+  scoped_ptr<HistogramSamples> SnapshotSamples() const override;
+  void WriteHTMLGraph(std::string* output) const override;
+  void WriteAscii(std::string* output) const override;
 
  protected:
   // HistogramBase implementation:
-  virtual bool SerializeInfoImpl(Pickle* pickle) const OVERRIDE;
+  bool SerializeInfoImpl(Pickle* pickle) const override;
 
  private:
   // Clients should always use FactoryGet to create SparseHistogram.
   explicit SparseHistogram(const std::string& name);
 
   friend BASE_EXPORT_PRIVATE HistogramBase* DeserializeHistogramInfo(
       PickleIterator* iter);
   static HistogramBase* DeserializeInfoImpl(PickleIterator* iter);
 
-  virtual void GetParameters(DictionaryValue* params) const OVERRIDE;
-  virtual void GetCountAndBucketData(Count* count,
-                                     int64* sum,
-                                     ListValue* buckets) const OVERRIDE;
+  void GetParameters(DictionaryValue* params) const override;
+  void GetCountAndBucketData(Count* count,
+                             int64* sum,
+                             ListValue* buckets) const override;
 
   // Helpers for emitting Ascii graphic.  Each method appends data to output.
   void WriteAsciiImpl(bool graph_it,
                       const std::string& newline,
                       std::string* output) const;
 
   // Write a common header message describing this histogram.
   void WriteAsciiHeader(const Count total_count,
                         std::string* output) const;
 
   // For constuctor calling.
   friend class SparseHistogramTest;
 
   // Protects access to |samples_|.
   mutable base::Lock lock_;
 
   SampleMap samples_;
 
   DISALLOW_COPY_AND_ASSIGN(SparseHistogram);
 };
 
 }  // namespace base
 
 #endif  // BASE_METRICS_SPARSE_HISTOGRAM_H_