Moved Http post processor bean name to BeanIds class.

core/src/main/java/org/springframework/security/config/BeanIds.java

@@ -11,6 +11,7 @@ public abstract class BeanIds {
 	/** Package protected as end users shouldn't really be using this BFPP directly */
 	static final String INTERCEPT_METHODS_BEAN_FACTORY_POST_PROCESSOR = "_interceptMethodsBeanfactoryPP";
     static final String CONTEXT_SOURCE_SETTING_POST_PROCESSOR = "_contextSettingPostProcessor";
+    static final String HTTP_POST_PROCESSOR = "_httpConfigBeanFactoryPostProcessor";    
 
     public static final String JDBC_USER_DETAILS_MANAGER = "_jdbcUserDetailsManager";
 	public static final String USER_DETAILS_SERVICE = "_userDetailsService";

core/src/main/java/org/springframework/security/config/HttpSecurityBeanDefinitionParser.java

@@ -210,7 +210,7 @@ public class HttpSecurityBeanDefinitionParser implements BeanDefinitionParser {
         registry.registerBeanDefinition(BeanIds.FILTER_SECURITY_INTERCEPTOR, filterSecurityInterceptorBuilder.getBeanDefinition());
 
         // Register the post processor which will tie up the loose ends in the configuration once the app context has been created and all beans are available.
-        registry.registerBeanDefinition("__httpConfigBeanFactoryPostProcessor", new RootBeanDefinition(HttpSecurityConfigPostProcessor.class));
+        registry.registerBeanDefinition(BeanIds.HTTP_POST_PROCESSOR, new RootBeanDefinition(HttpSecurityConfigPostProcessor.class));
 
         return null;
     }