Added a new extension point called "PageDecorator" to add HTML fragments to all pages.

git-svn-id: https://hudson.dev.java.net/svn/hudson/trunk/hudson/main@11223 71c3de6d-444a-0410-be80-ed276b4c234a

core/src/main/java/hudson/Functions.java

@@ -17,6 +17,7 @@ import hudson.model.Project;
 import hudson.model.Run;
 import hudson.model.TopLevelItem;
 import hudson.model.View;
+import hudson.model.PageDecorator;
 import hudson.search.SearchableModelObject;
 import hudson.security.AccessControlled;
 import hudson.security.AuthorizationStrategy;
@@ -932,5 +933,12 @@ public class Functions {
         return null;
     }
 
+    /**
+     * Gets all the {@link PageDecorator}s.
+     */
+    public static List<PageDecorator> getPageDecorators() {
+        return (List)PageDecorator.ALL;
+    }
+
     private static final Pattern SCHEME = Pattern.compile("[a-z]+://.+");
 }