Parameters with function types supported + Added features in mirrors implementation

lib/compiler/implementation/resolver.dart

 // Copyright (c) 2012, the Dart project authors.  Please see the AUTHORS file
 // for details. All rights reserved. Use of this source code is governed by a
 // BSD-style license that can be found in the LICENSE file.
 
 interface TreeElements {
   Element operator[](Node node);
   Selector getSelector(Send send);
   Type getType(TypeAnnotation annotation);
 }
 
@@ skipping 320 matching lines @@
 
   FunctionSignature resolveSignature(FunctionElement element) {
     return compiler.withCurrentElement(element, () {
       FunctionExpression node =
           compiler.parser.measure(() => element.parseNode(compiler));
       return measure(() => SignatureResolver.analyze(
           compiler, node.parameters, node.returnType, element));
     });
   }
 
+  FunctionSignature resolveFunctionExpression(Element element,
+                                              FunctionExpression node) {
+    return measure(() => SignatureResolver.analyze(
+      compiler, node.parameters, node.returnType, element));
+  }
+
   FunctionSignature resolveTypedef(TypedefElement element) {
     return compiler.withCurrentElement(element, () {
       Typedef node =
           compiler.parser.measure(() => element.parseNode(compiler));
       return measure(() => SignatureResolver.analyze(
           compiler, node.formals, node.returnType, element));
     });
   }
 
   FunctionType computeFunctionType(Element element,
@@ skipping 1854 matching lines @@
 
   TopScope(LibraryElement library) : super(null, library);
   Element lookup(SourceString name) {
     return library.find(name);
   }
 
   Element add(Element newElement) {
     throw "Cannot add an element in the top scope";
   }
 }