Register type constants through ConstantUse

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

Index: pkg/compiler/lib/src/js_backend/impact_transformer.dart
diff --git a/pkg/compiler/lib/src/js_backend/impact_transformer.dart b/pkg/compiler/lib/src/js_backend/impact_transformer.dart
index b3e04547ce036bb35015c3947ffdc2db6fd3ebcf..024a6c2086c9821787f431d660a3917e050fb8a0 100644
--- a/pkg/compiler/lib/src/js_backend/impact_transformer.dart
+++ b/pkg/compiler/lib/src/js_backend/impact_transformer.dart
@@ -346,7 +346,6 @@ class CodegenImpactTransformer {
   final MirrorsData _mirrorsData;
   final OneShotInterceptorData _oneShotInterceptorData;
   final LookupMapAnalysis _lookupMapAnalysis;
-  final CustomElementsCodegenAnalysis _customElementsCodegenAnalysis;
   final RuntimeTypesChecksBuilder _rtiChecksBuilder;
 
   CodegenImpactTransformer(
@@ -362,7 +361,6 @@ class CodegenImpactTransformer {
       this._mirrorsData,
       this._oneShotInterceptorData,
       this._lookupMapAnalysis,
-      this._customElementsCodegenAnalysis,
       this._rtiChecksBuilder);
 
   void onIsCheckForCodegen(
@@ -405,7 +403,6 @@ class CodegenImpactTransformer {
     }
   }
 
-  @override
   WorldImpact transformCodegenImpact(CodegenImpact impact) {
     TransformedWorldImpact transformed = new TransformedWorldImpact(impact);
 
@@ -461,11 +458,6 @@ class CodegenImpactTransformer {
       }
     }
 
-    for (ClassElement element in impact.typeConstants) {
-      _customElementsCodegenAnalysis.registerTypeConstant(element);
-      _lookupMapAnalysis.registerTypeConstant(element);
-    }
-
     for (FunctionElement element in impact.asyncMarkers) {
       switch (element.asyncMarker) {
         case AsyncMarker.ASYNC: