Re-generating generated DOM files.

tools/html_json_doc/lib/json_to_html.dart

Index: tools/html_json_doc/lib/json_to_html.dart
diff --git a/tools/html_json_doc/lib/json_to_html.dart b/tools/html_json_doc/lib/json_to_html.dart
index 391cd3c1d6d04be7e55d4c64c58f4850d68895ad..aae2b682d849d53d0f8b718db7121c2c46df9e97 100644
--- a/tools/html_json_doc/lib/json_to_html.dart
+++ b/tools/html_json_doc/lib/json_to_html.dart
@@ -140,6 +140,10 @@ void _convertFile(File file, Map<String, List<String>> comments) {
     _anyErrors = true;
   });
 
+  for (var i = 0; i < fileLines.length; ++i) {
+    fileLines[i] = fileLines[i].replaceAll(new RegExp(r'\s+$'), '');
+  }
+
   // TODO(amouravski): file.writeAsStringSync('${Strings.join(fileLines, '\n')}\n');
   var outputStream = file.openOutputStream();
   outputStream.writeString(Strings.join(fileLines, '\n'));