Enables the user to select multiple languages for spellchecking (UI)

chrome/common/pref_names.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.
 
 // Constants for the names of various preferences, for easier changing.
 
 #ifndef CHROME_COMMON_PREF_NAMES_H_
 #define CHROME_COMMON_PREF_NAMES_H_
 
 #include <stddef.h>
@@ skipping 501 matching lines @@
 extern const char kAllowFileSelectionDialogs[];
 extern const char kDefaultTasksByMimeType[];
 extern const char kDefaultTasksBySuffix[];
 
 extern const char kSelectFileLastDirectory[];
 
 extern const char kHungPluginDetectFrequency[];
 extern const char kPluginMessageResponseTimeout[];
 
 extern const char kSpellCheckDictionary[];
+extern const char kSpellCheckDictionaries[];
 extern const char kSpellCheckUseSpellingService[];
 
 extern const char kExcludedSchemes[];
 
 extern const char kOptionsWindowLastTabIndex[];
 extern const char kShowFirstRunBubbleOption[];
 
 extern const char kLastKnownIntranetRedirectOrigin[];
 
 extern const char kShutdownType[];
@@ skipping 298 matching lines @@
 
 #if defined(ENABLE_EXTENSIONS)
 extern const char kAnimationPolicy[];
 #endif
 
 extern const char kBackgroundTracingLastUpload[];
 
 }  // namespace prefs
 
 #endif  // CHROME_COMMON_PREF_NAMES_H_