A different approach for resynthesizing enumerations.

pkg/analyzer/lib/src/summary/resynthesize.dart

Index: pkg/analyzer/lib/src/summary/resynthesize.dart
diff --git a/pkg/analyzer/lib/src/summary/resynthesize.dart b/pkg/analyzer/lib/src/summary/resynthesize.dart
index 034aa0b782803e9ccbae76c0b2598d76cdb5a9e7..52e5e8d8542da2c99b84ffbf5de038fc4464e002 100644
--- a/pkg/analyzer/lib/src/summary/resynthesize.dart
+++ b/pkg/analyzer/lib/src/summary/resynthesize.dart
@@ -1677,18 +1677,6 @@ class _UnitResynthesizer {
   }
 
   /**
-   * Build the annotations for the given [element].
-   */
-  void buildAnnotations(
-      ElementImpl element, List<UnlinkedConst> serializedAnnotations) {
-    if (serializedAnnotations.isNotEmpty) {
-      element.metadata = serializedAnnotations
-          .map((a) => buildAnnotation(element, a))
-          .toList();
-    }
-  }
-
-  /**
    * Resynthesize a [ClassElement] and place it in [unitHolder].
    */
   void buildClass(UnlinkedClass serializedClass) {
@@ -1757,7 +1745,7 @@ class _UnitResynthesizer {
   ClassElementImpl buildClassImpl(
       UnlinkedClass serializedClass, ClassElementHandle handle) {
     ClassElementImpl classElement =
-        new ClassElementImpl.forSerialized(serializedClass, unit);
+        new ClassElementImpl.forSerialized(serializedClass, null, unit);
     classElement.hasBeenInferred = summaryResynthesizer.strongMode;
     InterfaceTypeImpl correspondingType =
         new InterfaceTypeImpl(handle ?? classElement);
@@ -1891,14 +1879,10 @@ class _UnitResynthesizer {
   void buildEnum(UnlinkedEnum serializedEnum) {
     assert(!libraryResynthesizer.isCoreLibrary);
     ClassElementImpl classElement =
-        new ClassElementImpl(serializedEnum.name, serializedEnum.nameOffset);
-    classElement.enum2 = true;
+        new ClassElementImpl.forSerialized(null, serializedEnum, unit);
     InterfaceType enumType = new InterfaceTypeImpl(classElement);
     classElement.type = enumType;
     classElement.supertype = typeProvider.objectType;
-    buildDocumentation(classElement, serializedEnum.documentationComment);
-    buildAnnotations(classElement, serializedEnum.annotations);
-    buildCodeRange(classElement, serializedEnum.codeRange);
     ElementHolder memberHolder = new ElementHolder();
     // Build the 'index' field.
     FieldElementImpl indexField = new FieldElementImpl('index', -1);