Elements. Rename ClassElementImpl.isDartCoreFunctionImpl to isDartCoreFunction.

Change-Id: Iddebaf4699e0241bece232847c0b9bf94bb77d20
Reviewed-on: https://dart-review.googlesource.com/c/sdk/+/446007
Reviewed-by: Johnni Winther <[email protected]>
Commit-Queue: Konstantin Shcheglov <[email protected]>

Author: scheglov

pkg/analyzer/lib/src/dart/element/element.dart

@@ -258,9 +258,9 @@ class ClassElementImpl extends InterfaceElementImpl implements ClassElement {
     return name == 'Enum' && library.isDartCore;
   }
 
-  /// Return `true` if this class represents the class 'Function' defined in the
-  /// dart:core library.
-  bool get isDartCoreFunctionImpl {
+  /// Whether the class represents the class 'Function' defined in `dart:core`.
+  @trackedIncludedInId
+  bool get isDartCoreFunction {
     return name == 'Function' && library.isDartCore;
   }
 

pkg/analyzer/lib/src/generated/error_verifier.dart

@@ -499,7 +499,7 @@ class ErrorVerifier extends RecursiveAstVisitor<void>
       _enclosingClass = declarationElement.asElement2;
 
       List<ClassMember> members = node.members;
-      if (!declarationElement.element.isDartCoreFunctionImpl) {
+      if (!declarationElement.element.isDartCoreFunction) {
         _checkForBuiltInIdentifierAsName(
           node.name,
           CompileTimeErrorCode.builtInIdentifierAsTypeName,