Delete the old html_json docs stuff.

tools/html_json_doc/test/html_json_doc_test.dart

-import '../../../pkg/unittest/lib/unittest.dart';
-import '../lib/html_to_json.dart' as html_to_json;
-import '../lib/json_to_html.dart' as json_to_html;
-import 'dart:json';
-import 'dart:io';
-
-void main() {
-  var scriptPath = new Path(new Options().script).directoryPath.toString();
-
-  test('HTML Doc to JSON', () {
-    var htmlPath = new Path('$scriptPath/test_data/html_to_json');
-    var jsonPath = new Path('$scriptPath/test_output/html_to_json_test.json');
-
-    var convertFuture = html_to_json.convert(htmlPath, jsonPath);
-
-    convertFuture.then(expectAsync1((anyErrors) {
-      var output = new File.fromPath(jsonPath);
-
-      var goldenFile = new File(
-          '$scriptPath/test_data/html_to_json/'
-          'html_to_json_test_golden_output.json');
-
-      expect(anyErrors, false, reason:'The conversion completed with errors.');
-      expect(output.readAsStringSync(), goldenFile.readAsStringSync());
-    }));
-  });
-
-  test('JSON to HTML Doc', () {
-    var preHtmlPath = new Path('$scriptPath/test_data/json_to_html');
-    var goldenHtmlPath = new Path('$scriptPath/test_data/html_to_json');
-    var htmlPath = new Path('$scriptPath/test_output');
-    var jsonPath = new Path('$scriptPath/test_output/html_to_json_test.json');
-
-    var copyFuture = _copyFiles(preHtmlPath, htmlPath);
-
-    copyFuture.then(expectAsync1((_) {
-      var convertFuture = json_to_html.convert(htmlPath, jsonPath);
-
-      convertFuture.then((anyErrors) {
-        expect(anyErrors, false,
-            reason:'The conversion completed with errors.');
-
-        _compareFilesInDirectories(goldenHtmlPath, htmlPath);
-
-      });
-    }));
-  });
-}
-
-void _compareFilesInDirectories(Path path1, Path path2) {
-  final dir1 = new Directory.fromPath(path1);
-  final dir2 = new Directory.fromPath(path2);
-  final lister1 = dir1.list(recursive: false);
-  final lister2 = dir2.list(recursive: false);
-
-  // True once one of the listers is finished.
-  var oneFinished = false;
-
-  var list1 = <String, File>{};
-
-  lister1.onFile = (String path) {
-    if (path.endsWith('.dart')) {
-      list1.putIfAbsent(new Path(path).filename, () => new File(path));
-    }
-  };
-
-  lister1.onDone = (_) {
-    lister2.onFile = (String path) {
-      if (path.endsWith('.dart')) {
-        expect(list1[new Path(path).filename].readAsStringSync(),
-            new File(path).readAsStringSync());
-      }
-    };
-  };
-}
-
-Future _copyFiles(Path fromDir, Path toDir) {
-  // First copy the files into a new place to keep the old files.
-  final completer = new Completer();
-  final htmlDir = new Directory.fromPath(fromDir);
-  final lister = htmlDir.list(recursive: false);
-
-  lister.onFile = (String path) {
-    final name = new Path(path).filename;
-
-    // Ignore private classes.
-    if (name.startsWith('_')) return;
-
-    // Ignore non-dart files.
-    if (!name.endsWith('.dart')) return;
-
-    File file = new File(path);
-    File newFile = new File.fromPath(toDir.append(name));
-
-    var outputStream = newFile.openOutputStream();
-    outputStream.writeString(file.readAsStringSync());
-  };
-
-  lister.onDone = (_) {
-    completer.complete(null);
-  };
-  return completer.future;
-}