Introduce typed selectors to do better tree shaking based on calls on 'this'. Getters and setters w…

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 330 matching lines @@
       String classNameString = className.slowToString();
       String constructorNameString = constructorName.slowToString();
       String name = (constructorName === const SourceString(''))
                         ? classNameString
                         : "$classNameString.$constructorNameString";
       MessageKind kind = isImplicitSuperCall
                          ? MessageKind.CANNOT_RESOLVE_CONSTRUCTOR_FOR_IMPLICIT
                          : MessageKind.CANNOT_RESOLVE_CONSTRUCTOR;
       error(diagnosticNode, kind, [name]);
     } else {
-      final Compiler compiler = visitor.compiler;
-      FunctionParameters parameters = result.computeParameters(compiler);
-      if (!selector.applies(parameters)) {
+      if (!selector.applies(result, visitor.compiler)) {
         MessageKind kind = isImplicitSuperCall
                            ? MessageKind.NO_MATCHING_CONSTRUCTOR_FOR_IMPLICIT
                            : MessageKind.NO_MATCHING_CONSTRUCTOR;
         error(diagnosticNode, kind);
       }
     }
     return result;
   }
 
   FunctionElement resolveRedirection(FunctionElement constructor,
@@ skipping 1549 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";
   }
 }