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

lib/compiler/implementation/compile_time_constants.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.
 
 class Constant implements Hashable {
   const Constant();
 
   bool isNull() => false;
   bool isBool() => false;
   bool isTrue() => false;
@@ skipping 939 matching lines @@
   }
 
   visitSendSet(SendSet node) {
     error(node);
   }
 
   /** Returns the list of constants that are passed to the static function. */
   List<Constant> evaluateArgumentsToConstructor(Selector selector,
                                                 Link<Node> arguments,
                                                 FunctionElement target) {
-    FunctionParameters parameters = target.computeParameters(compiler);
     List<Constant> compiledArguments = <Constant>[];
 
     Function compileArgument = evaluate;
     Function compileConstant = compiler.compileVariable;
-    bool succeeded = selector.addArgumentsToList(arguments, compiledArguments,
-                                                 parameters, compileArgument,
-                                                 compileConstant);
+    bool succeeded = selector.addArgumentsToList(arguments,
+                                                 compiledArguments,
+                                                 target,
+                                                 compileArgument,
+                                                 compileConstant,
+                                                 compiler);
     assert(succeeded);
     return compiledArguments;
   }
 
   Constant visitNewExpression(NewExpression node) {
     if (!node.isConst()) error(node);
 
     Send send = node.send;
     FunctionElement constructor = elements[send];
     ClassElement classElement = constructor.enclosingElement;
@@ skipping 164 matching lines @@
       Constant fieldValue = fieldValues[field];
       if (fieldValue === null) {
         // Use the default value.
         fieldValue = compiler.compileVariable(field);
       }
       jsNewArguments.add(fieldValue);          
     });
     return jsNewArguments;
   }
 }