Redo how Type objects are exposed from DDC.

test/codegen/expect/misc.js

 dart_library.library('misc', null, /* Imports */[
   'dart_sdk'
 ], function(exports, dart_sdk) {
   'use strict';
   const core = dart_sdk.core;
   const dart = dart_sdk.dart;
   const dartx = dart_sdk.dartx;
   const misc = Object.create(null);
   misc._Uninitialized = class _Uninitialized extends core.Object {
     _Uninitialized() {
     }
   };
   dart.setSignature(misc._Uninitialized, {
     constructors: () => ({_Uninitialized: [misc._Uninitialized, []]})
   });
   misc.UNINITIALIZED = dart.const(new misc._Uninitialized());
   misc.Generic$ = dart.generic(T => {
     class Generic extends core.Object {
       get type() {
-        return misc.Generic;
+        return dart.wrapType(misc.Generic);
       }
       m() {
-        return core.print(T);
+        return core.print(dart.wrapType(T));
       }
     }
     dart.setSignature(Generic, {
       methods: () => ({m: [dart.dynamic, []]})
     });
     return Generic;
   });
   misc.Generic = misc.Generic$();
   misc.Base = class Base extends core.Object {
     Base() {
@@ skipping 16 matching lines @@
     return ch == ' ' || ch == '\n' || ch == '\r' || ch == '\t';
   };
   dart.fn(misc._isWhitespace, core.bool, [core.String]);
   misc.expr = 'foo';
   misc._escapeMap = dart.const(dart.map({'\n': '\\n', '\r': '\\r', '\f': '\\f', '\b': '\\b', '\t': '\\t', '\v': '\\v', '': '\\x7F', [`\${${misc.expr}}`]: ''}));
   misc.main = function() {
     core.print(dart.toString(1));
     core.print(dart.toString(1.0));
     core.print(dart.toString(1.1));
     let x = 42;
-    core.print(dart.equals(x, dart.dynamic));
-    core.print(dart.equals(x, misc.Generic));
+    core.print(dart.equals(x, dart.wrapType(dart.dynamic)));
+    core.print(dart.equals(x, dart.wrapType(misc.Generic)));
     core.print(new (misc.Generic$(core.int))().type);
     core.print(dart.equals(new misc.Derived(), new misc.Derived()));
     new (misc.Generic$(core.int))().m();
   };
   dart.fn(misc.main);
   // Exports:
   exports.misc = misc;
 });