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

base/metrics/histogram_snapshot_manager_unittest.cc

 // Copyright 2014 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.
 
 #include "base/metrics/histogram_snapshot_manager.h"
 
 #include <string>
 #include <vector>
 
 #include "base/metrics/histogram.h"
 #include "base/metrics/histogram_delta_serialization.h"
 #include "base/metrics/statistics_recorder.h"
 #include "testing/gtest/include/gtest/gtest.h"
 
 namespace base {
 
 class HistogramFlattenerDeltaRecorder : public HistogramFlattener {
  public:
   HistogramFlattenerDeltaRecorder() {}
 
-  virtual void RecordDelta(const HistogramBase& histogram,
-                           const HistogramSamples& snapshot) OVERRIDE {
+  void RecordDelta(const HistogramBase& histogram,
+                   const HistogramSamples& snapshot) override {
     recorded_delta_histogram_names_.push_back(histogram.histogram_name());
   }
 
-  virtual void InconsistencyDetected(
-      HistogramBase::Inconsistency problem) OVERRIDE {
+  void InconsistencyDetected(HistogramBase::Inconsistency problem) override {
     ASSERT_TRUE(false);
   }
 
-  virtual void UniqueInconsistencyDetected(
-      HistogramBase::Inconsistency problem) OVERRIDE {
+  void UniqueInconsistencyDetected(
+      HistogramBase::Inconsistency problem) override {
     ASSERT_TRUE(false);
   }
 
-  virtual void InconsistencyDetectedInLoggedCount(int amount) OVERRIDE {
+  void InconsistencyDetectedInLoggedCount(int amount) override {
     ASSERT_TRUE(false);
   }
 
   std::vector<std::string> GetRecordedDeltaHistogramNames() {
     return recorded_delta_histogram_names_;
   }
 
  private:
   std::vector<std::string> recorded_delta_histogram_names_;
 
@@ skipping 50 matching lines @@
   histogram_snapshot_manager_.PrepareDeltas(
       HistogramBase::kNoFlags, HistogramBase::kUmaStabilityHistogramFlag);
 
   const std::vector<std::string>& histograms =
       histogram_flattener_delta_recorder_.GetRecordedDeltaHistogramNames();
   EXPECT_EQ(1U, histograms.size());
   EXPECT_EQ("UmaStabilityHistogram", histograms[0]);
 }
 
 }  // namespace base