Start separating ClassElementImpl for Class and Enum.

pkg/analyzer/test/generated/resolver_test.dart

Index: pkg/analyzer/test/generated/resolver_test.dart
diff --git a/pkg/analyzer/test/generated/resolver_test.dart b/pkg/analyzer/test/generated/resolver_test.dart
index fd39ad541267b59657164b94ad9ed2164960216c..14dd0e886541f4c698a5b843b2744765e029ebb4 100644
--- a/pkg/analyzer/test/generated/resolver_test.dart
+++ b/pkg/analyzer/test/generated/resolver_test.dart
@@ -391,7 +391,7 @@ class LibraryImportScopeTest extends ResolverTestCase {
     AnalysisContext context = AnalysisContextFactory.contextWithCore();
     String importedTypeName = "A";
     ClassElement importedType =
-        new ClassElementImpl.forNode(AstFactory.identifier3(importedTypeName));
+        new ClassElementImpl_Class.forNode(AstFactory.identifier3(importedTypeName));
     LibraryElement importedLibrary = createTestLibrary(context, "imported");
     (importedLibrary.definingCompilationUnit as CompilationUnitElementImpl)
         .types = <ClassElement>[importedType];
@@ -511,7 +511,7 @@ class LibraryScopeTest extends ResolverTestCase {
     AnalysisContext context = AnalysisContextFactory.contextWithCore();
     String importedTypeName = "A";
     ClassElement importedType =
-        new ClassElementImpl.forNode(AstFactory.identifier3(importedTypeName));
+        new ClassElementImpl_Class.forNode(AstFactory.identifier3(importedTypeName));
     LibraryElement importedLibrary = createTestLibrary(context, "imported");
     (importedLibrary.definingCompilationUnit as CompilationUnitElementImpl)
         .types = <ClassElement>[importedType];
@@ -2920,7 +2920,7 @@ class TypeProviderImplTest extends EngineTestCase {
   ClassElement _classElement(String typeName, InterfaceType superclassType,
       [List<String> parameterNames]) {
     ClassElementImpl element =
-        new ClassElementImpl.forNode(AstFactory.identifier3(typeName));
+        new ClassElementImpl_Class.forNode(AstFactory.identifier3(typeName));
     element.supertype = superclassType;
     InterfaceTypeImpl type = new InterfaceTypeImpl(element);
     element.type = type;