Pass SourceInformation through the CPS IR.

pkg/compiler/lib/src/js/nodes.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.
 
 part of js_ast;
 
 abstract class NodeVisitor<T> {
   T visitProgram(Program node);
 
   T visitBlock(Block node);
@@ skipping 645 matching lines @@
 
   Conditional _clone() => new Conditional(condition, then, otherwise);
 
   int get precedenceLevel => ASSIGNMENT;
 }
 
 class Call extends Expression {
   Expression target;
   List<Expression> arguments;
 
-  Call(this.target, this.arguments);
+  Call(this.target, this.arguments,
+       {JavaScriptNodeSourceInformation sourceInformation}) {
+    this._sourceInformation = sourceInformation;
+  }
 
   accept(NodeVisitor visitor) => visitor.visitCall(this);
 
   void visitChildren(NodeVisitor visitor) {
     target.accept(visitor);
     for (Expression arg in arguments) arg.accept(visitor);
   }
 
   Call _clone() => new Call(target, arguments);
 
@@ skipping 490 matching lines @@
 class Comment extends Statement {
   final String comment;
 
   Comment(this.comment);
 
   accept(NodeVisitor visitor) => visitor.visitComment(this);
   Comment _clone() => new Comment(comment);
 
   void visitChildren(NodeVisitor visitor) {}
 }