Update charted to 0.4.8 and roll

packages/observe/lib/src/dirty_check.dart

Index: packages/observe/lib/src/dirty_check.dart
diff --git a/packages/observe/lib/src/dirty_check.dart b/packages/observe/lib/src/dirty_check.dart
deleted file mode 100644
index 2084f227163a9d9642b0f5c8e584d21188879c51..0000000000000000000000000000000000000000
--- a/packages/observe/lib/src/dirty_check.dart
+++ /dev/null
@@ -1,133 +0,0 @@
-// Copyright (c) 2013, 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.
-
-/// *Warning*: this library is **internal**, and APIs are subject to change.
-///
-/// Tracks observable objects for dirty checking and testing purposes.
-///
-/// It can collect all observed objects, which can be used to trigger
-/// predictable delivery of all pending changes in a test, including objects
-/// allocated internally to another library, such as those in
-/// `package:template_binding`.
-library observe.src.dirty_check;
-
-import 'dart:async';
-import 'package:logging/logging.dart';
-import 'package:observe/observe.dart' show Observable;
-
-/// The number of active observables in the system.
-int get allObservablesCount => _allObservablesCount;
-
-int _allObservablesCount = 0;
-
-List<Observable> _allObservables = null;
-
-bool _delivering = false;
-
-void registerObservable(Observable obj) {
-  if (_allObservables == null) _allObservables = <Observable>[];
-  _allObservables.add(obj);
-  _allObservablesCount++;
-}
-
-/// Synchronously deliver all change records for known observables.
-///
-/// This will execute [Observable.deliverChanges] on objects that inherit from
-/// [Observable].
-// Note: this is called performMicrotaskCheckpoint in change_summary.js.
-void dirtyCheckObservables() {
-  if (_delivering) return;
-  if (_allObservables == null) return;
-
-  _delivering = true;
-
-  int cycles = 0;
-  bool anyChanged = false;
-  List debugLoop = null;
-  do {
-    cycles++;
-    if (cycles == MAX_DIRTY_CHECK_CYCLES) {
-      debugLoop = [];
-    }
-
-    var toCheck = _allObservables;
-    _allObservables = <Observable>[];
-    anyChanged = false;
-
-    for (int i = 0; i < toCheck.length; i++) {
-      final observer = toCheck[i];
-      if (observer.hasObservers) {
-        if (observer.deliverChanges()) {
-          anyChanged = true;
-          if (debugLoop != null) debugLoop.add([i, observer]);
-        }
-        _allObservables.add(observer);
-      }
-    }
-  } while (cycles < MAX_DIRTY_CHECK_CYCLES && anyChanged);
-
-  if (debugLoop != null && anyChanged) {
-    _logger.warning('Possible loop in Observable.dirtyCheck, stopped '
-        'checking.');
-    for (final info in debugLoop) {
-      _logger.warning('In last iteration Observable changed at index '
-          '${info[0]}, object: ${info[1]}.');
-    }
-  }
-
-  _allObservablesCount = _allObservables.length;
-  _delivering = false;
-}
-
-const MAX_DIRTY_CHECK_CYCLES = 1000;
-
-/// Log for messages produced at runtime by this library. Logging can be
-/// configured by accessing Logger.root from the logging library.
-final Logger _logger = new Logger('Observable.dirtyCheck');
-
-/// Creates a [ZoneSpecification] to set up automatic dirty checking after each
-/// batch of async operations. This ensures that change notifications are always
-/// delivered. Typically used via [dirtyCheckZone].
-ZoneSpecification dirtyCheckZoneSpec() {
-  bool pending = false;
-
-  enqueueDirtyCheck(ZoneDelegate parent, Zone zone) {
-    // Only schedule one dirty check per microtask.
-    if (pending) return;
-
-    pending = true;
-    parent.scheduleMicrotask(zone, () {
-      pending = false;
-      Observable.dirtyCheck();
-    });
-  }
-
-  wrapCallback(Zone self, ZoneDelegate parent, Zone zone, f()) {
-    // TODO(jmesserly): why does this happen?
-    if (f == null) return f;
-    return () {
-      enqueueDirtyCheck(parent, zone);
-      return f();
-    };
-  }
-
-  wrapUnaryCallback(Zone self, ZoneDelegate parent, Zone zone, f(x)) {
-    // TODO(jmesserly): why does this happen?
-    if (f == null) return f;
-    return (x) {
-      enqueueDirtyCheck(parent, zone);
-      return f(x);
-    };
-  }
-
-  return new ZoneSpecification(
-      registerCallback: wrapCallback,
-      registerUnaryCallback: wrapUnaryCallback);
-}
-
-/// Forks a [Zone] off the current one that does dirty-checking automatically
-/// after each batch of async operations. Equivalent to:
-///
-///     Zone.current.fork(specification: dirtyCheckZoneSpec());
-Zone dirtyCheckZone() => Zone.current.fork(specification: dirtyCheckZoneSpec());