Add help link when Bluetooth adapter is off for WebBluetooth chooser

chrome/common/url_constants.h

 // Copyright (c) 2012 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.
 
 // Contains constants for known URLs and portions thereof.
 
 #ifndef CHROME_COMMON_URL_CONSTANTS_H_
 #define CHROME_COMMON_URL_CONSTANTS_H_
 
 #include <stddef.h>
@@ skipping 576 matching lines @@
 
 #if defined(OS_WIN)
 // The URL for the Windows XP/Vista deprecation help center article.
 extern const char kWindowsXPVistaDeprecationURL[];
 #endif
 
 // The URL for the Bluetooth Overview help center article in the Web Bluetooth
 // Chooser.
 extern const char kChooserBluetoothOverviewURL[];
 
+// The URL for providing help when the Bluetooth adapter is off.
+extern const char kBluetoothAdapterOffHelpURL[];
+
 // The URL for the WebUsb help center article.
 extern const char kChooserUsbOverviewURL[];
 
 #if defined(OS_CHROMEOS)
 // The URL for EOL notification
 extern const char kEolNotificationURL[];
 #endif
 
 }  // namespace chrome
 
 #endif  // CHROME_COMMON_URL_CONSTANTS_H_