Make UMA_HISTOGRAM_ENUMERATION work with scoped enums.

base/metrics/histogram_macros.h

Index: base/metrics/histogram_macros.h
diff --git a/base/metrics/histogram_macros.h b/base/metrics/histogram_macros.h
index 78473761dd4f2105ca50609029ed351626a5a189..d39972a8a12abde3b9a3159fe76c76f456de5580 100644
--- a/base/metrics/histogram_macros.h
+++ b/base/metrics/histogram_macros.h
@@ -41,10 +41,9 @@
 // delete and reused. The value in |sample| must be strictly less than
 // |enum_max|.
 
-#define UMA_HISTOGRAM_ENUMERATION(name, sample, enum_max)                      \
-    INTERNAL_HISTOGRAM_ENUMERATION_WITH_FLAG(                                  \
-        name, sample, enum_max,                                                \
-        base::HistogramBase::kUmaTargetedHistogramFlag)
+#define UMA_HISTOGRAM_ENUMERATION(name, sample, enum_max) \

[rkaplow, 2017/03/29 18:02:50]

did git cl format suggest this? otherwise I'd probably leave the trailing \s at
the end as in the rest of the file for readability

[dcheng, 2017/03/29 18:24:40]

Yes, this is git cl format.

+  INTERNAL_HISTOGRAM_ENUMERATION_WITH_FLAG(               \
+      name, sample, enum_max, base::HistogramBase::kUmaTargetedHistogramFlag)
 
 // Histogram for boolean values.
 
@@ -68,14 +67,15 @@
 // Sample usage:
 //   UMA_HISTOGRAM_EXACT_LINEAR("Histogram.Linear", count, 10);
 #define UMA_HISTOGRAM_EXACT_LINEAR(name, sample, value_max) \
-  UMA_HISTOGRAM_ENUMERATION(name, sample, value_max)
+  INTERNAL_HISTOGRAM_EXACT_LINEAR_WITH_FLAG(                \
+      name, sample, value_max, base::HistogramBase::kUmaTargetedHistogramFlag)
 
 // Used for capturing basic percentages. This will be 100 buckets of size 1.
 
 // Sample usage:
 //   UMA_HISTOGRAM_PERCENTAGE("Histogram.Percent", percent_as_int);
-#define UMA_HISTOGRAM_PERCENTAGE(name, percent_as_int)                         \
-    UMA_HISTOGRAM_ENUMERATION(name, percent_as_int, 101)
+#define UMA_HISTOGRAM_PERCENTAGE(name, percent_as_int) \
+  UMA_HISTOGRAM_EXACT_LINEAR(name, percent_as_int, 101)
 
 //------------------------------------------------------------------------------
 // Count histograms. These are used for collecting numeric data. Note that we