Update ConstTopLevelVariableElementImpl constructors.

pkg/analyzer/lib/src/dart/element/element.dart

Index: pkg/analyzer/lib/src/dart/element/element.dart
diff --git a/pkg/analyzer/lib/src/dart/element/element.dart b/pkg/analyzer/lib/src/dart/element/element.dart
index e319acf7cea9e5ca65e1a4f22ed67d7923c7dda9..34c4bc8c9e1a229f6511d6fca62f47ef8fd27968 100644
--- a/pkg/analyzer/lib/src/dart/element/element.dart
+++ b/pkg/analyzer/lib/src/dart/element/element.dart
@@ -1400,10 +1400,18 @@ class ConstTopLevelVariableElementImpl extends TopLevelVariableElementImpl
   EvaluationResultImpl _result;
 
   /**
+   * Initialize a newly created synthetic top-level variable element to have the
+   * given [name] and [offset].
+   */
+  ConstTopLevelVariableElementImpl(String name, int offset)
+      : super(name, offset);
+
+  /**
    * Initialize a newly created top-level variable element to have the given
    * [name].
    */
-  ConstTopLevelVariableElementImpl(Identifier name) : super.forNode(name);
+  ConstTopLevelVariableElementImpl.forNode(Identifier name)
+      : super.forNode(name);
 
   @override
   DartObject get constantValue => _result.value;