dart2dart: Support for inner functions in new IR.

sdk/lib/_internal/compiler/implementation/dart_backend/dart_tree_printer.dart

Index: sdk/lib/_internal/compiler/implementation/dart_backend/dart_tree_printer.dart
diff --git a/sdk/lib/_internal/compiler/implementation/dart_backend/dart_tree_printer.dart b/sdk/lib/_internal/compiler/implementation/dart_backend/dart_tree_printer.dart
index 0d604cba6571dc13b3ea213bed572dafa6ac05b3..3789b141dad383123a6f7a39e7fea73e2fd5ff59 100644
--- a/sdk/lib/_internal/compiler/implementation/dart_backend/dart_tree_printer.dart
+++ b/sdk/lib/_internal/compiler/implementation/dart_backend/dart_tree_printer.dart
@@ -679,14 +679,16 @@ class TreePrinter {
           forToken,
           inToken);
     } else if (stmt is FunctionDeclaration) {
-      return new tree.FunctionDeclaration(new tree.FunctionExpression(
+      tree.FunctionExpression function = new tree.FunctionExpression(
           stmt.name != null ? makeIdentifier(stmt.name) : null,
           makeParameters(stmt.parameters),
           makeFunctionBody(stmt.body),
           stmt.returnType != null ? makeType(stmt.returnType) : null,
           makeEmptyModifiers(), // TODO(asgerf): Function modifiers?
           null,  // initializers
-          null)); // get/set
+          null);  // get/set
+      setElement(function, stmt.function.element, stmt);
+      return new tree.FunctionDeclaration(function);
     } else if (stmt is If) {
       if (stmt.elseStatement == null || isEmptyStatement(stmt.elseStatement)) {
         tree.Node node = new tree.If(