Reapply r3590 with frog fixes

frog/minfrog

 #!/usr/bin/env node
 //  ********** Library dart:core **************
 //  ********** Natives dart:core **************
 function $defProp(obj, prop, value) {
   Object.defineProperty(obj, prop,
       {value: value, enumerable: false, writable: true, configurable: true});
 }
 function $throw(e) {
   // If e is not a value, we can use V8's captureStackTrace utility method.
   // TODO(jmesserly): capture the stack trace on other JS engines.
@@ skipping 3087 matching lines @@
 WorldGenerator.prototype.set$writer = function(value) { return this.writer = value; };
 WorldGenerator.prototype.analyze = function() {
   var nlibs = (0), ntypes = (0), nmems = (0), nnews = (0);
   var $$list = $globals.world.libraries.getValues();
   for (var $$i = $$list.iterator(); $$i.hasNext(); ) {
     var lib = $$i.next();
     nlibs += (1);
     var $list0 = lib.get$types().getValues();
     for (var $i0 = $list0.iterator(); $i0.hasNext(); ) {
       var type = $i0.next();
+      if (type.get$library().get$isDom() || type.get$isHiddenNativeType()) {
+        if (type.get$isClass()) type.markUsed();
+      }
       ntypes += (1);
       var allMembers = [];
       allMembers.addAll(type.get$constructors().getValues());
       allMembers.addAll(type.get$members().getValues());
       type.get$factories().forEach((function (allMembers, f) {
         return allMembers.add(f);
       }).bind(null, allMembers)
       );
       for (var $i1 = allMembers.iterator(); $i1.hasNext(); ) {
         var m = $i1.next();
@@ skipping 131 matching lines @@
   for (var $$i = $$list.iterator(); $$i.hasNext(); ) {
     var file = $$i.next();
     var filename = basename(file.get$filename());
     this.writer.comment(("//  ********** Natives " + filename + " **************"));
     this.writer.writeln(file.get$text());
   }
   lib.topType.markUsed();
   var orderedTypes = this._orderValues(lib.types);
   for (var $$i = orderedTypes.iterator(); $$i.hasNext(); ) {
     var type = $$i.next();
-    if ((type.get$library().get$isDom() || type.get$isHiddenNativeType()) && type.get$isClass()) {
-      type.markUsed();
-    }
-  }
-  for (var $$i = orderedTypes.iterator(); $$i.hasNext(); ) {
-    var type = $$i.next();
     if (type.get$isUsed() && type.get$isClass()) {
       this.writeType(type);
       if (type.get$isGeneric() && type != $globals.world.listFactoryType) {
         var $$list = this._orderValues(type.get$_concreteTypes());
         for (var $i0 = $$list.iterator(); $i0.hasNext(); ) {
           var ct = $i0.next();
           if (ct.get$isUsed()) this.writeType(ct);
         }
       }
     }
@@ skipping 11360 matching lines @@
 }
 var const$0000 = Object.create(_DeletedKeySentinel.prototype, {});
 var const$0001 = Object.create(NoMoreElementsException.prototype, {});
 var const$0002 = Object.create(EmptyQueueException.prototype, {});
 var const$0006 = Object.create(IllegalAccessException.prototype, {});
 var const$0007 = ImmutableList.ImmutableList$from$factory([]);
 var const$0009 = new JSSyntaxRegExp("^[a-zA-Z]:/");
 var $globals = {};
 $static_init();
 main();