Fix for AnalysisContext.getElement() for enums.

pkg/analyzer/test/generated/engine_test.dart

Index: pkg/analyzer/test/generated/engine_test.dart
diff --git a/pkg/analyzer/test/generated/engine_test.dart b/pkg/analyzer/test/generated/engine_test.dart
index d790ab95dfe0df3c376a6ecd5b2deb4c40a24694..c03806274b9ba34fb11ac986a46832c47bc7f5a7 100644
--- a/pkg/analyzer/test/generated/engine_test.dart
+++ b/pkg/analyzer/test/generated/engine_test.dart
@@ -210,6 +210,8 @@ class AnalysisContextImplTest extends EngineTestCase {
     AnalysisOptionsImpl options =
         new AnalysisOptionsImpl.con1(_context.analysisOptions);
     options.cacheSize = 256;
+    options.enableAsync = true;
+    options.enableEnum = true;
     _context.analysisOptions = options;
   }
 
@@ -677,6 +679,16 @@ class A {
     JUnitTestCase.assertSame(constructor, element);
   }
 
+  void test_getElement_enum() {
+    Source source = _addSource('/test.dart', 'enum MyEnum {A, B, C}');
+    _analyzeAll_assertFinished();
+    LibraryElement library = _context.computeLibraryElement(source);
+    ClassElement myEnum = library.definingCompilationUnit.getEnum('MyEnum');
+    ElementLocation location = myEnum.location;
+    Element element = _context.getElement(location);
+    JUnitTestCase.assertSame(myEnum, element);
+  }
+
   void test_getErrors_dart_none() {
     Source source = _addSource("/lib.dart", "library lib;");
     List<AnalysisError> errors = _context.getErrors(source).errors;