Function type checking: Part Deux

compiler/java/com/google/dart/compiler/backend/js/DartMangler.java

Index: compiler/java/com/google/dart/compiler/backend/js/DartMangler.java
diff --git a/compiler/java/com/google/dart/compiler/backend/js/DartMangler.java b/compiler/java/com/google/dart/compiler/backend/js/DartMangler.java
index d381a01b1389c5b83f02d94763d576812a3e0971..3848cd9fa32088f4f601478fffa807d64a5136d9 100644
--- a/compiler/java/com/google/dart/compiler/backend/js/DartMangler.java
+++ b/compiler/java/com/google/dart/compiler/backend/js/DartMangler.java
@@ -104,6 +104,13 @@ public interface DartMangler {
   public String mangleNamedMethod(String methodName, LibraryElement currentLibrary);
 
   /**
+   * Mangles the given method to its _$lookupRTT form.
+   * @return a String that identifies the named form of the member.
+   */
+  public String mangleRttLookupMethod(MethodElement method, LibraryElement currentLibrary);
+  public String mangleRttLookupMethod(String methodName, LibraryElement currentLibrary);
+
+  /**
    * Mangles the given method, so that it does not clash with any built-in JS property or other
    * mangled fields or methods. This method is different than mangleMethod, as it returns
    * the fully qualified mangled name.