Parameters with function types supported + Added features in mirrors implementation

lib/compiler/implementation/compiler.dart

Index: lib/compiler/implementation/compiler.dart
diff --git a/lib/compiler/implementation/compiler.dart b/lib/compiler/implementation/compiler.dart
index 79e936668248c2a67fd6ecb0cc9d506efd0254fd..abc40e3844ecb79c6f81597dd1aa5ef21c544333 100644
--- a/lib/compiler/implementation/compiler.dart
+++ b/lib/compiler/implementation/compiler.dart
@@ -921,6 +921,12 @@ class Compiler implements DiagnosticListener {
                               () => resolver.resolveSignature(element));
   }
 
+  FunctionSignature resolveFunctionExpression(Element element,
+                                              FunctionExpression node) {
+    return withCurrentElement(element,
+        () => resolver.resolveFunctionExpression(element, node));
+  }
+
   FunctionSignature resolveTypedef(TypedefElement element) {
     return withCurrentElement(element,
                               () => resolver.resolveTypedef(element));