Package-ify Dromaeo and browser controller functionality

samples/third_party/dromaeo/common/BenchUtil.dart

-// Copyright (c) 2011, the Dart project authors.  Please see the AUTHORS file
-// for details. All rights reserved. Use of this source code is governed by a
-// BSD-style license that can be found in the LICENSE file.
-
-part of common;
-
-// Misc benchmark-related utility functions.
-
-class BenchUtil {
-  static int get now {
-    return new DateTime.now().millisecondsSinceEpoch;
-  }
-
-  static Map<String, Object> deserialize(String data) {
-    return JSON.decode(data);
-  }
-
-  static String serialize(Object obj) {
-    return JSON.encode(obj);
-  }
-
-  // Shuffle a list randomly.
-  static void shuffle(List<Object> list) {
-    int len = list.length - 1;
-    for (int i = 0; i < len; i++) {
-      int index = (Math.random() * (len - i)).toInt() + i;
-      Object tmp = list[i];
-      list[i] = list[index];
-      list[index] = tmp;
-    }
-  }
-
-  static String formatGolemData(String prefix, Map<String, num> results) {
-    List<String> elements = new List<String>();
-    results.forEach((String name, num score) {
-      elements.add('"${prefix}/${name}":${score}');
-    });
-    return serialize(elements);
-  }
-
-  static bool _inRange(int charCode, String start, String end) {
-    return start.codeUnitAt(0) <= charCode && charCode <= end.codeUnitAt(0);
-  }
-
-  static const String DIGITS = '0123456789ABCDEF';
-  static String _asDigit(int value) {
-    return DIGITS[value];
-  }
-
-  static String encodeUri(final String s) {
-    StringBuffer sb = new StringBuffer();
-    for (int i = 0; i < s.length; i++) {
-      final int charCode = s.codeUnitAt(i);
-      final bool noEscape =
-          _inRange(charCode, '0', '9') ||
-          _inRange(charCode, 'a', 'z') ||
-          _inRange(charCode, 'A', 'Z');
-      if (noEscape) {
-        sb.write(s[i]);
-      } else {
-       sb.write('%');
-       sb.write(_asDigit((charCode >> 4) & 0xF));
-       sb.write(_asDigit(charCode & 0xF));
-      }
-    }
-    return sb.toString();
-  }
-
-  // TODO: use corelib implementation.
-  static String replaceAll(String s, String pattern,
-                           String replacement(Match match)) {
-    StringBuffer sb = new StringBuffer();
-
-    int pos = 0;
-    for (Match match in new RegExp(pattern).allMatches(s)) {
-      sb.write(s.substring(pos, match.start));
-      sb.write(replacement(match));
-      pos = match.end;
-    }
-    sb.write(s.substring(pos));
-
-    return sb.toString();
-  }
-}