Add a preference to force enable the NaCl plugin as we transition to

chrome/common/pref_names.h

 // Copyright (c) 2011 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 230 matching lines @@
 extern const char kCurrentThemeTints[];
 extern const char kCurrentThemeDisplayProperties[];
 extern const char kExtensionsUIDeveloperMode[];
 extern const char kExtensionToolbarSize[];
 extern const char kPluginsLastInternalDirectory[];
 extern const char kPluginsPluginsList[];
 extern const char kPluginsDisabledPlugins[];
 extern const char kPluginsDisabledPluginsExceptions[];
 extern const char kPluginsEnabledPlugins[];
 extern const char kPluginsEnabledInternalPDF[];
+extern const char kPluginsEnabledNaCl[];
 extern const char kPluginsShowSetReaderDefaultInfobar[];
 extern const char kPluginsShowDetails[];
 extern const char kPluginsAllowOutdated[];
 extern const char kPluginsAlwaysAuthorize[];
 extern const char kCheckDefaultBrowser[];
 extern const char kDefaultBrowserSettingEnabled[];
 #if defined(OS_MACOSX)
 extern const char kShowUpdatePromotionInfoBar[];
 #endif
 extern const char kUseCustomChromeFrame[];
@@ skipping 324 matching lines @@
 
 extern const char kUserCreatedLoginItem[];
 extern const char kBackgroundModeEnabled[];
 
 extern const char kDevicePolicyRefreshRate[];
 extern const char kUserPolicyRefreshRate[];
 
 }  // namespace prefs
 
 #endif  // CHROME_COMMON_PREF_NAMES_H_