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

lib/compiler/implementation/ssa/builder.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 Interceptors {
   Compiler compiler;
   Interceptors(Compiler this.compiler);
 
   SourceString mapOperatorToMethodName(Operator op) {
     String name = op.source.stringValue;
@@ skipping 1314 matching lines @@
       // TODO(ahe): The constructor name is statically resolved. See
       // SsaCodeGenerator.visitInvokeDynamicMethod. Is there a cleaner
       // way to do this?
       SourceString name =
           new SourceString(backend.namer.getName(body.declaration));
       // TODO(kasperl): This seems fishy. We shouldn't be inventing all
       // these selectors. Maybe the resolver can do more of the work
       // for us here?
       LibraryElement library = body.getLibrary();
       Selector selector = new Selector.call(name, library, arity);
-      add(new HInvokeDynamicMethod(selector, bodyCallInputs));
+      HInstruction invoke = new HInvokeDynamicMethod(selector, bodyCallInputs);
+      invoke.element = body;
+      add(invoke);
     }
     close(new HReturn(newObject)).addSuccessor(graph.exit);
     return closeFunction();
   }
 
   void addParameterCheckInstruction(Element element) {
     // This is the code we emit for a parameter that is being checked
     // on whether it was given at value at the call site:
     //
     // foo([a = 42) {
@@ skipping 2999 matching lines @@
           new HSubGraphBlockInformation(elseBranch.graph));
 
     HBasicBlock conditionStartBlock = conditionBranch.block;
     conditionStartBlock.setBlockFlow(info, joinBlock);
     SubGraph conditionGraph = conditionBranch.graph;
     HIf branch = conditionGraph.end.last;
     assert(branch is HIf);
     branch.blockInformation = conditionStartBlock.blockFlow;
   }
 }