Add UMA for WebBluetooth RSSI signal strength level

content/browser/bluetooth/bluetooth_metrics.cc

 // Copyright 2015 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 "content/browser/bluetooth/bluetooth_metrics.h"
 
 #include <stdint.h>
 
 #include <map>
 #include <set>
@@ skipping 310 matching lines @@
       "Bluetooth.Web.Characteristic.StartNotifications.Outcome",
       static_cast<int>(outcome),
       static_cast<int>(UMAGATTOperationOutcome::COUNT));
 }
 
 void RecordStartNotificationsOutcome(CacheQueryOutcome outcome) {
   RecordStartNotificationsOutcome(
       TranslateCacheQueryOutcomeToGATTOperationOutcome(outcome));
 }
 
+void RecordRSSISignalStrengthLevel(UMARSSISignalStrengthLevel level) {
+  UMA_HISTOGRAM_ENUMERATION(
+      "Bluetooth.Web.RequestDevice.RSSISignalStrengthLevel",
+      static_cast<int>(level),
+      static_cast<int>(UMARSSISignalStrengthLevel::COUNT));
+}
+
 }  // namespace content