Revert "Revert "fix #27256, track type bounds for generic functions""

pkg/dev_compiler/test/codegen_expected/script.js

Index: pkg/dev_compiler/test/codegen_expected/script.js
diff --git a/pkg/dev_compiler/test/codegen_expected/script.js b/pkg/dev_compiler/test/codegen_expected/script.js
index 95dd30e55042d625c67676562b314485662a93e4..2b8cfec37d2ccab6f9c2ef5f4cfd91d4baa20a13 100644
--- a/pkg/dev_compiler/test/codegen_expected/script.js
+++ b/pkg/dev_compiler/test/codegen_expected/script.js
@@ -5,7 +5,7 @@ define(['dart_sdk'], function(dart_sdk) {
   const dartx = dart_sdk.dartx;
   const script = Object.create(null);
   let ListOfString = () => (ListOfString = dart.constFn(core.List$(core.String)))();
-  let ListOfStringTovoid = () => (ListOfStringTovoid = dart.constFn(dart.definiteFunctionType(dart.void, [ListOfString()])))();
+  let ListOfStringTovoid = () => (ListOfStringTovoid = dart.constFn(dart.fnType(dart.void, [ListOfString()])))();
   script.main = function(args) {
     let name = args[dartx.join](' ');
     if (name == '') name = 'world';