1 files changed, 63 insertions, 0 deletions
diff --git a/chromium/third_party/blink/renderer/platform/histogram.cc b/chromium/third_party/blink/renderer/platform/histogram.cc
new file mode 100644
index 00000000000..18ddfca5c99
--- /dev/null
+++ b/chromium/third_party/blink/renderer/platform/histogram.cc
@@ -0,0 +1,63 @@
+// Copyright 2016 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 "third_party/blink/renderer/platform/histogram.h"
+
+#include "base/metrics/histogram.h"
+#include "base/metrics/sparse_histogram.h"
+
+namespace blink {
+
+CustomCountHistogram::CustomCountHistogram(const char* name,
+                                           base::HistogramBase::Sample min,
+                                           base::HistogramBase::Sample max,
+                                           int32_t bucket_count) {
+  histogram_ = base::Histogram::FactoryGet(
+      name, min, max, bucket_count,
+      base::HistogramBase::kUmaTargetedHistogramFlag);
+}
+
+CustomCountHistogram::CustomCountHistogram(base::HistogramBase* histogram)
+    : histogram_(histogram) {}
+
+void CustomCountHistogram::Count(base::HistogramBase::Sample sample) {
+  histogram_->Add(sample);
+}
+
+BooleanHistogram::BooleanHistogram(const char* name)
+    : CustomCountHistogram(base::BooleanHistogram::FactoryGet(
+          name,
+          base::HistogramBase::kUmaTargetedHistogramFlag)) {}
+
+EnumerationHistogram::EnumerationHistogram(
+    const char* name,
+    base::HistogramBase::Sample boundary_value)
+    : CustomCountHistogram(base::LinearHistogram::FactoryGet(
+          name,
+          1,
+          boundary_value,
+          boundary_value + 1,
+          base::HistogramBase::kUmaTargetedHistogramFlag)) {}
+
+SparseHistogram::SparseHistogram(const char* name) {
+  histogram_ = base::SparseHistogram::FactoryGet(
+      name, base::HistogramBase::kUmaTargetedHistogramFlag);
+}
+
+void SparseHistogram::Sample(base::HistogramBase::Sample sample) {
+  histogram_->Add(sample);
+}
+
+LinearHistogram::LinearHistogram(const char* name,
+                                 base::HistogramBase::Sample min,
+                                 base::HistogramBase::Sample max,
+                                 int32_t bucket_count)
+    : CustomCountHistogram(base::LinearHistogram::FactoryGet(
+          name,
+          min,
+          max,
+          bucket_count,
+          base::HistogramBase::kUmaTargetedHistogramFlag)) {}
+
+}  // namespace blink