classes with call-methods were not recognized as Functions.

sdk/lib/_internal/compiler/implementation/elements/elements.dart

Index: sdk/lib/_internal/compiler/implementation/elements/elements.dart
diff --git a/sdk/lib/_internal/compiler/implementation/elements/elements.dart b/sdk/lib/_internal/compiler/implementation/elements/elements.dart
index 53d6650ed24f460b4611fe6fe254c7fd528266a2..6ce39d48c2a91faf0375123c6c4fe3d6305b92ba 100644
--- a/sdk/lib/_internal/compiler/implementation/elements/elements.dart
+++ b/sdk/lib/_internal/compiler/implementation/elements/elements.dart
@@ -907,6 +907,11 @@ abstract class ClassElement extends TypeDeclarationElement
 
   bool isObject(Compiler compiler);
   bool isSubclassOf(ClassElement cls);
+  /// Returns true if `this` exlicitly/nominally implements [intrface].

[Johnni Winther, 2014/02/03 08:27:25]

'exlicitly' -> 'explicitly'

[floitsch, 2014/02/03 17:43:20]

Done.

+  ///
+  /// Note that, if [intrface] is the `Function` class, this method returns
+  /// falso for a class that has a `call` method but does not explicitly
+  /// implement `Function`.
   bool implementsInterface(ClassElement intrface);
   bool hasFieldShadowedBy(Element fieldMember);