Update from https://crrev.com/304121

base/metrics/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.
 
 // Histogram is an object that aggregates statistics, and can summarize them in
 // various forms, including ASCII graphical, HTML, and numerically (as a
 // vector of numbers corresponding to each of the aggregating buckets).
 
 // It supports calls to accumulate either time intervals (which are processed
 // as integral number of milliseconds), or arbitrary integral units.
@@ skipping 268 matching lines @@
 
 #define UMA_HISTOGRAM_PERCENTAGE(name, under_one_hundred) \
     UMA_HISTOGRAM_ENUMERATION(name, under_one_hundred, 101)
 
 #define UMA_HISTOGRAM_BOOLEAN(name, sample) \
     STATIC_HISTOGRAM_POINTER_BLOCK(name, AddBoolean(sample), \
         base::BooleanHistogram::FactoryGet(name, \
             base::HistogramBase::kUmaTargetedHistogramFlag))
 
 // The samples should always be strictly less than |boundary_value|.  For more
-// details, see the comment for the |HISTOGRAM_ENUMERATION| macro, above.
+// details, see the comment for the |LOCAL_HISTOGRAM_ENUMERATION| macro, above.
 #define UMA_HISTOGRAM_ENUMERATION(name, sample, boundary_value) \
     HISTOGRAM_ENUMERATION_WITH_FLAG(name, sample, boundary_value, \
         base::HistogramBase::kUmaTargetedHistogramFlag)
 
 // Similar to UMA_HISTOGRAM_ENUMERATION, but used for recording stability
 // histograms.  Use this if recording a histogram that should be part of the
 // initial stability log.
 #define UMA_STABILITY_HISTOGRAM_ENUMERATION(name, sample, boundary_value) \
     HISTOGRAM_ENUMERATION_WITH_FLAG(name, sample, boundary_value, \
         base::HistogramBase::kUmaStabilityHistogramFlag)
@@ skipping 312 matching lines @@
   static bool ValidateCustomRanges(const std::vector<Sample>& custom_ranges);
   static BucketRanges* CreateBucketRangesFromCustomRanges(
       const std::vector<Sample>& custom_ranges);
 
   DISALLOW_COPY_AND_ASSIGN(CustomHistogram);
 };
 
 }  // namespace base
 
 #endif  // BASE_METRICS_HISTOGRAM_H_