Add listener calls to ThisExpression and KernelTypeLiteral.

pkg/front_end/lib/src/fasta/kernel/kernel_shadow_ast.dart

Index: pkg/front_end/lib/src/fasta/kernel/kernel_shadow_ast.dart
diff --git a/pkg/front_end/lib/src/fasta/kernel/kernel_shadow_ast.dart b/pkg/front_end/lib/src/fasta/kernel/kernel_shadow_ast.dart
index 87f4778fe8da8db0f8b4d4ebec27b818ff46d505..0e985f8a1ef47ba209d0ad9d9ffc7a075cbd78c1 100644
--- a/pkg/front_end/lib/src/fasta/kernel/kernel_shadow_ast.dart
+++ b/pkg/front_end/lib/src/fasta/kernel/kernel_shadow_ast.dart
@@ -1893,7 +1893,12 @@ class KernelThisExpression extends ThisExpression implements KernelExpression {
   @override
   DartType _inferExpression(
       KernelTypeInferrer inferrer, DartType typeContext, bool typeNeeded) {
-    return typeNeeded ? (inferrer.thisType ?? const DynamicType()) : null;
+    typeNeeded =
+        inferrer.listener.thisExpressionEnter(this, typeContext) || typeNeeded;
+    var inferredType =
+        typeNeeded ? (inferrer.thisType ?? const DynamicType()) : null;
+    inferrer.listener.thisExpressionExit(this, inferredType);
+    return inferredType;
   }
 }
 
@@ -2083,7 +2088,11 @@ class KernelTypeLiteral extends TypeLiteral implements KernelExpression {
   @override
   DartType _inferExpression(
       KernelTypeInferrer inferrer, DartType typeContext, bool typeNeeded) {
-    return typeNeeded ? inferrer.coreTypes.typeClass.rawType : null;
+    typeNeeded =
+        inferrer.listener.typeLiteralEnter(this, typeContext) || typeNeeded;
+    var inferredType = typeNeeded ? inferrer.coreTypes.typeClass.rawType : null;
+    inferrer.listener.typeLiteralExit(this, inferredType);
+    return inferredType;
   }
 }