Implement WebBluetooth getDescriptor[s]

content/browser/bluetooth/bluetooth_metrics.h

 // 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.
 
 #ifndef CONTENT_BROWSER_BLUETOOTH_BLUETOOTH_METRICS_H_
 #define CONTENT_BROWSER_BLUETOOTH_BLUETOOTH_METRICS_H_
 
 #include <string>
 #include <vector>
 
@@ skipping 33 matching lines @@
 // API.
 void RecordWebBluetoothFunctionCall(UMAWebBluetoothFunction function);
 
 // Enumeration for outcomes of querying the bluetooth cache.
 enum class CacheQueryOutcome {
   SUCCESS = 0,
   BAD_RENDERER = 1,
   NO_DEVICE = 2,
   NO_SERVICE = 3,
   NO_CHARACTERISTIC = 4,
+  NO_DESCRIPTOR = 5,
 };
 
 // requestDevice() Metrics
 enum class UMARequestDeviceOutcome {
   SUCCESS = 0,
   NO_BLUETOOTH_ADAPTER = 1,
   NO_RENDER_FRAME = 2,
   OBSOLETE_DISCOVERY_START_FAILED = 3,
   OBSOLETE_DISCOVERY_STOP_FAILED = 4,
   OBSOLETE_NO_MATCHING_DEVICES_FOUND = 5,
@@ skipping 164 matching lines @@
   // Note: Add new GATT Outcomes immediately above this line.
   // Make sure to update the enum list in
   // tools/metrics/histograms/histograms.xml accordingly.
   COUNT
 };
 
 enum class UMAGATTOperation {
   CHARACTERISTIC_READ,
   CHARACTERISTIC_WRITE,
   START_NOTIFICATIONS,
+  DESCRIPTOR_READ,
+  DESCRIPTOR_WRITE,
   // Note: Add new GATT Operations immediately above this line.
   COUNT
 };
 
 // Records the outcome of a GATT operation.
 // There should be a call to this function whenever the corresponding operation
 // doesn't have a call to Record[Operation]Outcome.
 void RecordGATTOperationOutcome(UMAGATTOperation operation,
                                 UMAGATTOperationOutcome outcome);
 
@@ skipping 41 matching lines @@
 
 // Records the raw RSSI, and processed result displayed to users, when
 // content::BluetoothDeviceChooserController::CalculateSignalStrengthLevel() is
 // called.
 void RecordRSSISignalStrength(int rssi);
 void RecordRSSISignalStrengthLevel(UMARSSISignalStrengthLevel level);
 
 }  // namespace content
 
 #endif  // CONTENT_BROWSER_BLUETOOTH_BLUETOOTH_METRICS_H_