Move Bluetooth.Web.FunctionCall.Count UMA from browser to WebKit

third_party/WebKit/Source/modules/bluetooth/BluetoothMetrics.cpp

+// Copyright 2017 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 "modules/bluetooth/BluetoothMetrics.h"
+
+#include "base/metrics/histogram_macros.h"
+
+namespace blink {
+
+void RecordWebBluetoothFunctionCall(UMAWebBluetoothFunction function) {
+  UMA_HISTOGRAM_ENUMERATION("Bluetooth.Web.FunctionCall.Count",
+                            static_cast<int>(function),
+                            static_cast<int>(UMAWebBluetoothFunction::COUNT));
+}
+
+}  // namespace blink