Add errors for various chooser failure modes, and remove assertions that are about to change.

Source/modules/bluetooth/BluetoothError.cpp

 // Copyright 2014 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 "config.h"
 #include "modules/bluetooth/BluetoothError.h"
 
 #include "core/dom/DOMException.h"
 #include "core/dom/ExceptionCode.h"
 
@@ skipping 23 matching lines @@
         MAP_ERROR(ConnectAuthFailed, NetworkError, "Authentication failed.");
         MAP_ERROR(ConnectAuthCanceled, NetworkError, "Authentication canceled.");
         MAP_ERROR(ConnectAuthRejected, NetworkError, "Authentication rejected.");
         MAP_ERROR(ConnectAuthTimeout, NetworkError, "Authentication timeout.");
         MAP_ERROR(ConnectUnsupportedDevice, NetworkError, "Unsupported device.");
         MAP_ERROR(UntranslatedConnectErrorCode, NetworkError, "Unknown ConnectErrorCode.");
 
         // NotFoundErrors:
         MAP_ERROR(BluetoothAdapterOff, NotFoundError, "Bluetooth adapter is off.");
         MAP_ERROR(NoBluetoothAdapter, NotFoundError, "Bluetooth adapter not available.");
+        MAP_ERROR(NoBluetoothChooser, NotFoundError, "Can't show Bluetooth chooser dialog.");
         MAP_ERROR(DiscoverySessionStartFailed, NotFoundError, "Couldn't start discovery session.");
         MAP_ERROR(DiscoverySessionStopFailed, NotFoundError, "Failed to stop discovery session.");
+        MAP_ERROR(ChosenDeviceVanished, NotFoundError, "User selected a device that doesn't exist anymore.");
+        MAP_ERROR(ChooserCancelled, NotFoundError, "User cancelled the requestDevice() chooser.");
         MAP_ERROR(NoDevicesFound, NotFoundError, "No Bluetooth devices in range.");
         MAP_ERROR(ServiceNotFound, NotFoundError, "Service not found in device.");
         MAP_ERROR(CharacteristicNotFound, NotFoundError, "Characteristic not found in device.");
 
         // NotSupportedErrors:
         MAP_ERROR(GATTUnknownError, NotSupportedError, "GATT Error Unknown.");
         MAP_ERROR(GATTUnknownFailure, NotSupportedError, "GATT operation failed for unknown reason.");
         MAP_ERROR(GATTNotPermitted, NotSupportedError, "GATT operation not permitted.");
         MAP_ERROR(GATTNotSupported, NotSupportedError, "GATT Error: Not supported.");
         MAP_ERROR(GATTUntranslatedErrorCode, NotSupportedError, "GATT Error: Unknown GattErrorCode.");
 
         // SecurityErrors:
         MAP_ERROR(GATTNotAuthorized, SecurityError, "GATT operation not authorized.");
         MAP_ERROR(RequestDeviceWithoutFrame, SecurityError, "No window to show the requestDevice() dialog.");
 
 #undef MAP_ERROR
     }
 
     ASSERT_NOT_REACHED();
     return DOMException::create(UnknownError);
 }
 
 } // namespace blink