unfork DDC's copy of most SDK libraries

pkg/dev_compiler/tool/input_sdk/lib/internal/internal.dart

-// Copyright (c) 2012, 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.
-
-library dart._internal;
-
-import 'dart:collection';
-
-import 'dart:core' hide Symbol;
-import 'dart:core' as core;
-import 'dart:math' show Random;
-
-part 'iterable.dart';
-part 'list.dart';
-part 'lists.dart';
-part 'print.dart';
-part 'sort.dart';
-part 'symbol.dart';
-
-// Powers of 10 up to 10^22 are representable as doubles.
-// Powers of 10 above that are only approximate due to lack of precission.
-// Used by double-parsing.
-const POWERS_OF_TEN = const [
-                        1.0,  /*  0 */
-                       10.0,
-                      100.0,
-                     1000.0,
-                    10000.0,
-                   100000.0,  /*  5 */
-                  1000000.0,
-                 10000000.0,
-                100000000.0,
-               1000000000.0,
-              10000000000.0,  /* 10 */
-             100000000000.0,
-            1000000000000.0,
-           10000000000000.0,
-          100000000000000.0,
-         1000000000000000.0,  /*  15 */
-        10000000000000000.0,
-       100000000000000000.0,
-      1000000000000000000.0,
-     10000000000000000000.0,
-    100000000000000000000.0,  /*  20 */
-   1000000000000000000000.0,
-  10000000000000000000000.0,
-];
-
-/**
- * An [Iterable] of the UTF-16 code units of a [String] in index order.
- */
-class CodeUnits extends UnmodifiableListBase<int> {
-  /** The string that this is the code units of. */
-  final String _string;
-
-  CodeUnits(this._string);
-
-  int get length => _string.length;
-  int operator[](int i) => _string.codeUnitAt(i);
-
-  static String stringOf(CodeUnits u) => u._string;
-}