bluetooth: Test Web Bluetooth getCharacteristic calls against blacklist.

content/browser/bluetooth/bluetooth_dispatcher_host.cc

Index: content/browser/bluetooth/bluetooth_dispatcher_host.cc
diff --git a/content/browser/bluetooth/bluetooth_dispatcher_host.cc b/content/browser/bluetooth/bluetooth_dispatcher_host.cc
index 81ba1896929f39605fd05f3a0d9497c73e0873ef..22ad2c63fd955f1db5bb3032a2cc1020f01c2ff4 100644
--- a/content/browser/bluetooth/bluetooth_dispatcher_host.cc
+++ b/content/browser/bluetooth/bluetooth_dispatcher_host.cc
@@ -792,6 +792,16 @@ void BluetoothDispatcherHost::OnGetCharacteristic(
   RecordWebBluetoothFunctionCall(UMAWebBluetoothFunction::GET_CHARACTERISTIC);
   RecordGetCharacteristicCharacteristic(characteristic_uuid);
 
+  // Check Blacklist for characteristic_uuid.
+  if (BluetoothBlacklist::Get().IsExcluded(
+          BluetoothUUID(characteristic_uuid))) {
+    RecordGetCharacteristicOutcome(UMAGetCharacteristicOutcome::BLACKLISTED);
+    Send(new BluetoothMsg_GetCharacteristicError(
+        thread_id, request_id,
+        WebBluetoothError::BlacklistedCharacteristicUUID));
+    return;
+  }
+
   const CacheQueryResult query_result =
       QueryCacheForService(GetOrigin(frame_routing_id), service_instance_id);