Add source information to variable declarations in CPS.

pkg/compiler/lib/src/tree_ir/tree_ir_builder.dart

 // Copyright (c) 2014, 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.
 
 library tree_ir_builder;
 
 import '../common.dart';
 import '../constants/values.dart';
 import '../cps_ir/cps_ir_nodes.dart' as cps_ir;
 import '../elements/elements.dart';
@@ skipping 127 matching lines @@
       // Local function's 'this' refers to enclosing method's 'this'
       thisParameter = parent.thisParameter;
     } else {
       thisParameter = node.thisParameter;
     }
     List<Variable> parameters =
         node.parameters.map(addFunctionParameter).toList();
     returnContinuation = node.returnContinuation;
     phiTempVar = new Variable(node.element, null);
     Statement body = translateExpression(node.body);
-    return new FunctionDefinition(node.element, parameters, body);
+    return new FunctionDefinition(node.element, parameters, body,
+        sourceInformation: node.sourceInformation);
   }
 
   /// Returns a list of variables corresponding to the arguments to a method
   /// call or similar construct.
   ///
   /// The `readCount` for these variables will be incremented.
   ///
   /// The list will be typed as a list of [Expression] to allow inplace updates
   /// on the list during the rewrite phases.
   List<Expression> translateArguments(List<cps_ir.Reference> args) {
@@ skipping 583 matching lines @@
 
   visitFunctionDefinition(cps_ir.FunctionDefinition node) {
     unexpectedNode(node);
   }
   visitParameter(cps_ir.Parameter node) => unexpectedNode(node);
   visitContinuation(cps_ir.Continuation node) => unexpectedNode(node);
   visitMutableVariable(cps_ir.MutableVariable node) => unexpectedNode(node);
   visitRethrow(cps_ir.Rethrow node) => unexpectedNode(node);
   visitBoundsCheck(cps_ir.BoundsCheck node) => unexpectedNode(node);
 }