Serialize and resynthesize labels.

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 44c7137bc2049fbf7ec19f586c81b3df4aa12d77..0ad81f0f6fe7a73c0c32686e22714f4def2a2f24 100644
--- a/pkg/analyzer/lib/src/dart/element/element.dart
+++ b/pkg/analyzer/lib/src/dart/element/element.dart
@@ -2930,7 +2930,17 @@ class LabelElementImpl extends ElementImpl implements LabelElement {
    * `switch` statement and [onSwitchMember] should be `true` if this label is
    * associated with a `switch` member.
    */
-  LabelElementImpl(
+  LabelElementImpl(String name, int nameOffset, this._onSwitchStatement,
+      this._onSwitchMember)
+      : super(name, nameOffset);
+
+  /**
+   * Initialize a newly created label element to have the given [name].
+   * [onSwitchStatement] should be `true` if this label is associated with a
+   * `switch` statement and [onSwitchMember] should be `true` if this label is
+   * associated with a `switch` member.
+   */
+  LabelElementImpl.forNode(
       Identifier name, this._onSwitchStatement, this._onSwitchMember)
       : super.forNode(name);
 
@@ -4547,6 +4557,11 @@ class TypeParameterElementImpl extends ElementImpl
   TypeParameterElementImpl(String name, int offset) : super(name, offset);
 
   /**
+   * Initialize a newly created type parameter element to have the given [name].
+   */
+  TypeParameterElementImpl.forNode(Identifier name) : super.forNode(name);
+
+  /**
    * Initialize a newly created synthetic type parameter element to have the
    * given [name], and with [synthetic] set to true.
    */
@@ -4554,11 +4569,6 @@ class TypeParameterElementImpl extends ElementImpl
     synthetic = true;
   }
 
-  /**
-   * Initialize a newly created type parameter element to have the given [name].
-   */
-  TypeParameterElementImpl.forNode(Identifier name) : super.forNode(name);
-
   @override
   ElementKind get kind => ElementKind.TYPE_PARAMETER;