Check closure data for serialization

pkg/compiler/lib/src/deferred_load.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 deferred_load;
 
 import 'common/backend_api.dart' show Backend;
 import 'common/tasks.dart' show CompilerTask;
 import 'common.dart';
 import 'compiler.dart' show Compiler;
@@ skipping 333 matching lines @@
         // (like primitive constant literals like `true`, `"foo"` and `0`).
         // See dartbug.com/26406 for context.
         treeElements
             .forEachConstantNode((Node node, ConstantExpression expression) {
           // Explicitly depend on the backend constants.
           if (backend.constants.hasConstantValue(expression)) {
             ConstantValue value =
                 backend.constants.getConstantValue(expression);
             assert(invariant(node, value != null,
                 message: "Constant expression without value: "
-                         "${expression.toStructuredText()}."));
+                    "${expression.toStructuredText()}."));
             constants.add(value);
           } else {
-            assert(invariant(node,
-                expression.isImplicit || expression.isPotential,
-                message: "Unexpected unevaluated constant expression: "
-                    "${expression.toStructuredText()}."));
+            assert(
+                invariant(node, expression.isImplicit || expression.isPotential,
+                    message: "Unexpected unevaluated constant expression: "
+                        "${expression.toStructuredText()}."));
           }
         });
       }
     }
 
     // TODO(sigurdm): How is metadata on a patch-class handled?
     for (MetadataAnnotation metadata in element.metadata) {
       ConstantValue constant =
           backend.constants.getConstantValueForMetadata(metadata);
       if (constant != null) {
@@ skipping 627 matching lines @@
     return result;
   }
 
   bool operator ==(other) {
     if (other is! _DeclaredDeferredImport) return false;
     return declaration == other.declaration;
   }
 
   int get hashCode => declaration.hashCode * 17;
 }