Implement the apply functionality for dart2js and currently just put it in a test.

lib/compiler/implementation/ssa/codegen.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 SsaCodeGeneratorTask extends CompilerTask {
 
   final JavaScriptBackend backend;
 
   SsaCodeGeneratorTask(JavaScriptBackend backend)
       : this.backend = backend,
@@ skipping 1451 matching lines @@
     return new js.Call(new js.PropertyAccess.field(receiver, fieldName),
                        arguments);
   }
 
   visitInvokeDynamicMethod(HInvokeDynamicMethod node) {
     use(node.receiver);
     js.Expression object = pop();
     SourceString name = node.selector.name;
     String methodName;
     List<js.Expression> arguments;
+    Element target = node.element;
 
     // Avoid adding the generative constructor name to the list of
     // seen selectors.
-    if (node.inputs[0] is HForeignNew) {
-      // TODO(ahe): The constructor name was statically resolved in
-      // SsaBuilder.buildFactory. Is there a cleaner way to do this?
+    if (target != null && target.isGenerativeConstructorBody()) {
       methodName = name.slowToString();
       arguments = visitArguments(node.inputs);
     } else {
       methodName = backend.namer.instanceMethodInvocationName(
           node.selector.library, name, node.selector);
       arguments = visitArguments(node.inputs);
       bool inLoop = node.block.enclosingLoopHeader !== null;
 
       // Register this invocation to collect the types used at all call sites.
       Selector selector = getOptimizedSelectorFor(node, node.selector);
       backend.registerDynamicInvocation(node, selector, types);
 
       // If we don't know what we're calling or if we are calling a getter,
       // we need to register that fact that we may be calling a closure
       // with the same arguments.
-      Element target = node.element;
       if (target === null || target.isGetter()) {
         // TODO(kasperl): If we have a typed selector for the call, we
         // may know something about the types of closures that need
         // the specific closure call method.
         Selector call = new Selector.callClosureFrom(selector);
         world.registerDynamicInvocation(call.name, call);
       }
 
       if (target !== null) {
         // If we know we're calling a specific method, register that
@@ skipping 1493 matching lines @@
   if (leftType.canBeNull() && rightType.canBeNull()) {
     if (left.isConstantNull() || right.isConstantNull() ||
         (leftType.isPrimitive() && leftType == rightType)) {
       return '==';
     }
     return null;
   } else {
     return '===';
   }
 }