Hook up full list literal type inference logic.

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

 // Copyright (c) 2017, the Dart project authors.  Please see the AUTHORS file
 // for details. All rights reserved. Use of this source code is governed by a
 // BSD-style license that can be found in the LICENSE file.
 
 /// This file declares a "shadow hierarchy" of concrete classes which extend
 /// the kernel class hierarchy, adding methods and fields needed by the
 /// BodyBuilder.
 ///
 /// Instances of these classes may be created using the factory methods in
 /// `ast_factory.dart`.
@@ skipping 280 matching lines @@
   DartType _inferExpression(
       KernelTypeInferrer inferrer, DartType typeContext, bool typeNeeded) {
     IsExpression isExpression = this.operand;
     return inferrer.inferIsExpression(
         typeContext, typeNeeded, isExpression.operand);
   }
 }
 
 /// Concrete shadow object representing a list literal in kernel form.
 class KernelListLiteral extends ListLiteral implements KernelExpression {
+  final DartType _declaredTypeArgument;
+
   KernelListLiteral(List<Expression> expressions,
       {DartType typeArgument, bool isConst: false})
-      : super(expressions, typeArgument: typeArgument, isConst: isConst);
+      : _declaredTypeArgument = typeArgument,
+        super(expressions,
+            typeArgument: typeArgument ?? const DynamicType(),
+            isConst: isConst);
 
   @override
   DartType _inferExpression(
       KernelTypeInferrer inferrer, DartType typeContext, bool typeNeeded) {
-    return inferrer.inferListLiteral(typeContext, typeNeeded, typeArgument);
+    return inferrer.inferListLiteral(
+        typeContext, typeNeeded, fileOffset, _declaredTypeArgument, expressions,
+        (type) {
+      typeArgument = type;
+    });
   }
 }
 
 /// Shadow object for [LogicalExpression].
 class KernelLogicalExpression extends LogicalExpression
     implements KernelExpression {
   KernelLogicalExpression(Expression left, String operator, Expression right)
       : super(left, operator, right);
 
   @override
@@ skipping 560 matching lines @@
       : super(variable, value);
 
   @override
   DartType _inferExpression(
       KernelTypeInferrer inferrer, DartType typeContext, bool typeNeeded) {
     var variable = this.variable as KernelVariableDeclaration;
     return inferrer.inferVariableSet(
         typeContext, typeNeeded, variable._declaredType, value);
   }
 }