bluetooth: Add histograms and logging for getCharacteristic

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 <map>
 #include <set>
 #include <vector>
@@ skipping 79 matching lines @@
     // Note: Add new GetPrimaryService outcomes immediately above this line.
     // Make sure to update the enum list in
     // tools/metrics/histograms/histograms.xml accordingly.
     COUNT
   };
   static void RecordGetPrimaryServiceService(
       const device::BluetoothUUID& service);
   static void RecordGetPrimaryServiceOutcome(
       UMAGetPrimaryServiceOutcome outcome);
 
+  // getCharacteristic()
+  enum class UMAGetCharacteristicOutcome {
+    SUCCESS = 0,
+    NO_DEVICE = 1,
+    NO_SERVICE = 2,
+    NOT_FOUND = 3,
+    // Note: Add new outcomes immediately above this line.
+    // Make sure to update the enum list in
+    // tools/metrisc/histogram/histograms.xml accordingly.
+    COUNT
+  };
+  static void RecordGetCharacteristicOutcome(
+      UMAGetCharacteristicOutcome outcome);
+  static void RecordGetCharacteristicCharacteristic(
+      const std::string& characteristic);
+
   // read/write characteristics
   // TODO(ortuno): For now we are just copying over the code to record these
   // errors but a follow up CL will add a function for each operation.
 
   // These types of errors aren't as common. We log them to understand
   // how common they are and if we need to investigate more.
   enum class UMAGATTError {
     UNKNOWN = 0,
     FAILED = 1,
     IN_PROGRESS = 2,
     NOT_PAIRED = 3,
     // Note: Add new GATT Errors immediately above this line.
     // Make sure to update the enum list in
     // tools/metrics/histograms/histograms.xml accordingly.
     MAX_ERROR,
   };
   static void RecordGATTError(UMAGATTError error);
 };
 
 }  // namespace content
 
 #endif  // CONTENT_BROWSER_BLUETOOTH_BLUETOOTH_METRICS_H_