bluetooth: macOS: Adding histograms for NSError values

device/bluetooth/bluetooth_remote_gatt_characteristic_mac.mm

Index: device/bluetooth/bluetooth_remote_gatt_characteristic_mac.mm
diff --git a/device/bluetooth/bluetooth_remote_gatt_characteristic_mac.mm b/device/bluetooth/bluetooth_remote_gatt_characteristic_mac.mm
index 900f3f6613ff866b754d734485da20efe264d7d6..9ae0546d22cc1dd1279728188801fbfc74006fb7 100644
--- a/device/bluetooth/bluetooth_remote_gatt_characteristic_mac.mm
+++ b/device/bluetooth/bluetooth_remote_gatt_characteristic_mac.mm
@@ -9,6 +9,7 @@
 #include "base/strings/sys_string_conversions.h"
 #include "base/threading/thread_task_runner_handle.h"
 #include "device/bluetooth/bluetooth_adapter_mac.h"
+#include "device/bluetooth/bluetooth_adapter_mac_metrics.h"
 #include "device/bluetooth/bluetooth_device_mac.h"
 #include "device/bluetooth/bluetooth_gatt_notify_session.h"
 #include "device/bluetooth/bluetooth_remote_gatt_descriptor_mac.h"
@@ -251,6 +252,11 @@ void BluetoothRemoteGattCharacteristicMac::DidUpdateValue(NSError* error) {
   CHECK_EQ(GetCBPeripheral().state, CBPeripheralStateConnected);
   // This method is called when the characteristic is read and when a
   // notification is received.
+  if (error) {
+    LogNSErrorToHistogram(
+        error,
+        WebBluetoothMacOSAPIs::WEB_BLUETOOTH_MACOS_APIS_DID_UPDATE_VALUE);
+  }
   if (HasPendingRead()) {
     std::pair<ValueCallback, ErrorCallback> callbacks;
     callbacks.swap(read_characteristic_value_callbacks_);
@@ -289,6 +295,10 @@ void BluetoothRemoteGattCharacteristicMac::UpdateValue() {
 }
 
 void BluetoothRemoteGattCharacteristicMac::DidWriteValue(NSError* error) {
+  if (error) {
+    LogNSErrorToHistogram(
+        error, WebBluetoothMacOSAPIs::WEB_BLUETOOTH_MACOS_APIS_DID_WRITE_VALUE);
+  }
   // We could have called cancelPeripheralConnection, which causes
   // [CBPeripheral state] to be CBPeripheralStateDisconnected, before or during
   // a write without response callback so we flush all pending writes.
@@ -341,6 +351,9 @@ void BluetoothRemoteGattCharacteristicMac::DidUpdateNotificationState(
     return;
   }
   if (error) {
+    LogNSErrorToHistogram(
+        error, WebBluetoothMacOSAPIs::
+                   WEB_BLUETOOTH_MACOS_APIS_DID_UPDATE_NOTIFICATION_STATE);
     BluetoothGattService::GattErrorCode error_code =
         BluetoothDeviceMac::GetGattErrorCodeFromNSError(error);
     VLOG(1) << *this