Adding <keygen> Content Setting (core)

components/content_settings/core/common/pref_names.h

Index: components/content_settings/core/common/pref_names.h
diff --git a/components/content_settings/core/common/pref_names.h b/components/content_settings/core/common/pref_names.h
index da2a851f37f131dd10e878c2bd3da81fe64835bc..de82faa1754514df9a573ba161696fe5d45da981 100644
--- a/components/content_settings/core/common/pref_names.h
+++ b/components/content_settings/core/common/pref_names.h
@@ -20,6 +20,7 @@ extern const char kContentSettingsWindowLastTabIndex[];
 extern const char kManagedDefaultCookiesSetting[];
 extern const char kManagedDefaultImagesSetting[];
 extern const char kManagedDefaultJavaScriptSetting[];
+extern const char kManagedDefaultKeygenSetting[];
 extern const char kManagedDefaultPluginsSetting[];
 extern const char kManagedDefaultPopupsSetting[];
 extern const char kManagedDefaultGeolocationSetting[];
@@ -33,6 +34,8 @@ extern const char kManagedImagesAllowedForUrls[];
 extern const char kManagedImagesBlockedForUrls[];
 extern const char kManagedJavaScriptAllowedForUrls[];
 extern const char kManagedJavaScriptBlockedForUrls[];
+extern const char kManagedKeygenAllowedForUrls[];
+extern const char kManagedKeygenBlockedForUrls[];
 extern const char kManagedPluginsAllowedForUrls[];
 extern const char kManagedPluginsBlockedForUrls[];
 extern const char kManagedPopupsAllowedForUrls[];