- Parse the return type of JS during resolution to know what can be instantiated there.

sdk/lib/_internal/compiler/implementation/compile_time_constants.dart

Index: sdk/lib/_internal/compiler/implementation/compile_time_constants.dart
===================================================================
--- sdk/lib/_internal/compiler/implementation/compile_time_constants.dart	(revision 15508)
+++ sdk/lib/_internal/compiler/implementation/compile_time_constants.dart	(working copy)
@@ -273,14 +273,17 @@
   }
 
   Constant visitLiteralBool(LiteralBool node) {
+    registerInstantiatedClass(compiler.boolClass);
     return constantSystem.createBool(node.value);
   }
 
   Constant visitLiteralDouble(LiteralDouble node) {
+    registerInstantiatedClass(compiler.doubleClass);
     return constantSystem.createDouble(node.value);
   }
 
   Constant visitLiteralInt(LiteralInt node) {
+    registerInstantiatedClass(compiler.intClass);
     return constantSystem.createInt(node.value);
   }