Revert "Implement .getCallType" and "Update status"

pkg/compiler/lib/src/js_backend/namer.dart

Index: pkg/compiler/lib/src/js_backend/namer.dart
diff --git a/pkg/compiler/lib/src/js_backend/namer.dart b/pkg/compiler/lib/src/js_backend/namer.dart
index 9ac8b1ea328970cd8839ace16e0a91a32ccc5b68..66d8086b7af75c24e6c620cc96d12064ef51a66a 100644
--- a/pkg/compiler/lib/src/js_backend/namer.dart
+++ b/pkg/compiler/lib/src/js_backend/namer.dart
@@ -12,7 +12,7 @@ import '../closure.dart';
 import '../common.dart';
 import '../common/names.dart' show Identifiers, Selectors;
 import '../constants/values.dart';
-import '../common_elements.dart' show CommonElements, ElementEnvironment;
+import '../common_elements.dart' show CommonElements;
 import '../diagnostics/invariant.dart' show DEBUG_MODE;
 import '../elements/elements.dart'
     show
@@ -578,8 +578,6 @@ class Namer {
     _literalLazyGetterPrefix = new StringBackedName(lazyGetterPrefix);
   }
 
-  ElementEnvironment get _elementEnvironment => _closedWorld.elementEnvironment;
-
   CommonElements get _commonElements => _closedWorld.commonElements;
 
   NativeData get _nativeData => _closedWorld.nativeData;
@@ -955,26 +953,11 @@ class Namer {
   }
 
   bool _isShadowingSuperField(FieldEntity element) {
-    assert(element.isField);
-    String fieldName = element.name;
-    bool isPrivate = Name.isPrivateName(fieldName);
-    LibraryEntity memberLibrary = element.library;
-    ClassEntity lookupClass =
-        _elementEnvironment.getSuperClass(element.enclosingClass);
-    while (lookupClass != null) {
-      MemberEntity foundMember =
-          _elementEnvironment.lookupClassMember(lookupClass, fieldName);
-      if (foundMember != null) {
-        if (foundMember.isField) {
-          if (!isPrivate || memberLibrary == foundMember.library) {
-            // Private fields can only be shadowed by a field declared in the
-            // same library.
-            return true;
-          }
-        }
-      }
-      lookupClass = _elementEnvironment.getSuperClass(lookupClass);
+    ClassEntity cls = element.enclosingClass;
+    if (cls is ClassElement) {
+      return cls.hasFieldShadowedBy(element);
     }
+    // TODO(redemption): Support class entities.
     return false;
   }