fixes #185, track const ctor dependencies, plus a static field fix

lib/runtime/dart/convert.js

Index: lib/runtime/dart/convert.js
diff --git a/lib/runtime/dart/convert.js b/lib/runtime/dart/convert.js
index fb427e537d82611e93994403017168fab6015256..862c1c219ad14fb4f1d576fecf8fd651d2a016bb 100644
--- a/lib/runtime/dart/convert.js
+++ b/lib/runtime/dart/convert.js
@@ -504,6 +504,21 @@ var collection = dart.import(collection);
     },
     set _nameToEncoding(_) {}
   });
+  let _name = Symbol('_name');
+  class HtmlEscapeMode extends core.Object {
+    _(name, escapeLtGt, escapeQuot, escapeApos, escapeSlash) {
+      this[_name] = name;
+      this.escapeLtGt = escapeLtGt;
+      this.escapeQuot = escapeQuot;
+      this.escapeApos = escapeApos;
+      this.escapeSlash = escapeSlash;
+    }
+    toString() {
+      return this[_name];
+    }
+  }
+  dart.defineNamedConstructor(HtmlEscapeMode, '_');
+  HtmlEscapeMode.UNKNOWN = dart.const(new HtmlEscapeMode._('unknown', true, true, true, true));
   let _convert = Symbol('_convert');
   class HtmlEscape extends Converter$(core.String, core.String) {
     HtmlEscape(mode) {
@@ -581,21 +596,6 @@ var collection = dart.import(collection);
     }
   }
   let HTML_ESCAPE = dart.const(new HtmlEscape());
-  let _name = Symbol('_name');
-  class HtmlEscapeMode extends core.Object {
-    _(name, escapeLtGt, escapeQuot, escapeApos, escapeSlash) {
-      this[_name] = name;
-      this.escapeLtGt = escapeLtGt;
-      this.escapeQuot = escapeQuot;
-      this.escapeApos = escapeApos;
-      this.escapeSlash = escapeSlash;
-    }
-    toString() {
-      return this[_name];
-    }
-  }
-  dart.defineNamedConstructor(HtmlEscapeMode, '_');
-  HtmlEscapeMode.UNKNOWN = dart.const(new HtmlEscapeMode._('unknown', true, true, true, true));
   HtmlEscapeMode.ATTRIBUTE = dart.const(new HtmlEscapeMode._('attribute', false, true, false, false));
   HtmlEscapeMode.ELEMENT = dart.const(new HtmlEscapeMode._('element', true, false, false, true));
   let _escape = Symbol('_escape');
@@ -2411,9 +2411,9 @@ var collection = dart.import(collection);
   exports.ChunkedConversionSink = ChunkedConversionSink;
   exports.ByteConversionSink = ByteConversionSink;
   exports.ByteConversionSinkBase = ByteConversionSinkBase;
+  exports.HtmlEscapeMode = HtmlEscapeMode;
   exports.HtmlEscape = HtmlEscape;
   exports.HTML_ESCAPE = HTML_ESCAPE;
-  exports.HtmlEscapeMode = HtmlEscapeMode;
   exports.JsonUnsupportedObjectError = JsonUnsupportedObjectError;
   exports.JsonCyclicError = JsonCyclicError;
   exports.JsonCodec = JsonCodec;