Remove ConstantFinder constructor parameters.

pkg/analyzer/lib/src/dart/constant/utilities.dart

Index: pkg/analyzer/lib/src/dart/constant/utilities.dart
diff --git a/pkg/analyzer/lib/src/dart/constant/utilities.dart b/pkg/analyzer/lib/src/dart/constant/utilities.dart
index 62b3ec8d501c7c74b81fa691719e32d92205c112..90c8a38482fa175ab1b68af9e1992ee89679fa08 100644
--- a/pkg/analyzer/lib/src/dart/constant/utilities.dart
+++ b/pkg/analyzer/lib/src/dart/constant/utilities.dart
@@ -14,8 +14,6 @@ import 'package:analyzer/src/dart/element/element.dart';
 import 'package:analyzer/src/dart/element/handle.dart'
     show ConstructorElementHandle;
 import 'package:analyzer/src/dart/element/member.dart';
-import 'package:analyzer/src/generated/engine.dart';
-import 'package:analyzer/src/generated/source.dart' show Source;
 import 'package:analyzer/src/task/dart.dart';
 
 ConstructorElementImpl getConstructorImpl(ConstructorElement constructor) {
@@ -156,10 +154,6 @@ class ConstantExpressionsDependenciesFinder extends RecursiveAstVisitor {
  * those compilation units.
  */
 class ConstantFinder extends RecursiveAstVisitor<Object> {
-  final AnalysisContext context;
-  final Source source;
-  final Source librarySource;
-
   /**
    * The elements and AST nodes whose constant values need to be computed.
    */
@@ -172,8 +166,6 @@ class ConstantFinder extends RecursiveAstVisitor<Object> {
    */
   bool treatFinalInstanceVarAsConst = false;
 
-  ConstantFinder(this.context, this.source, this.librarySource);
-
   @override
   Object visitAnnotation(Annotation node) {
     super.visitAnnotation(node);