Also delete plugin data when the cookies checkbox in the clear browsing data dialog is checked.

chrome/common/pref_names.h

 // Copyright (c) 2010 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_
 #pragma once
 
@@ skipping 155 matching lines @@
 extern const char kIpcDisabledMessages[];
 extern const char kShowHomeButton[];
 extern const char kShowPageOptionsButtons[];
 extern const char kRecentlySelectedEncoding[];
 extern const char kDeleteBrowsingHistory[];
 extern const char kDeleteDownloadHistory[];
 extern const char kDeleteCache[];
 extern const char kDeleteCookies[];
 extern const char kDeletePasswords[];
 extern const char kDeleteFormData[];
-extern const char kDeleteLSOData[];
 extern const char kClearPluginLSODataEnabled[];
 extern const char kEnableSpellCheck[];
 extern const char kEnabledLabsExperiments[];
 extern const char kEnableAutoSpellCorrect[];
 extern const char kSavingBrowserHistoryDisabled[];
 extern const char kDeleteTimePeriod[];
 extern const char kPrintingEnabled[];
 extern const char kPrintingPageHeaderLeft[];
 extern const char kPrintingPageHeaderCenter[];
 extern const char kPrintingPageHeaderRight[];
@@ skipping 249 matching lines @@
 extern const char kAuthNegotiateDelegateWhitelist[];
 extern const char kGSSAPILibraryName[];
 
 extern const char kKnownBackgroundPages[];
 
 extern const char kDisable3DAPIs[];
 
 }  // namespace prefs
 
 #endif  // CHROME_COMMON_PREF_NAMES_H_