Roll Observatory packages and add a roll script

watcher/lib/watcher.dart

Index: watcher/lib/watcher.dart
diff --git a/watcher/lib/watcher.dart b/watcher/lib/watcher.dart
deleted file mode 100644
index 79dcc0daef31ad1256fc2950bde86e055d1b5309..0000000000000000000000000000000000000000
--- a/watcher/lib/watcher.dart
+++ /dev/null
@@ -1,69 +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.
-
-library watcher;
-
-import 'dart:async';
-import 'dart:io';
-
-import 'src/watch_event.dart';
-import 'src/directory_watcher.dart';
-import 'src/file_watcher.dart';
-
-export 'src/watch_event.dart';
-export 'src/directory_watcher.dart';
-export 'src/directory_watcher/polling.dart';
-export 'src/file_watcher.dart';
-export 'src/file_watcher/polling.dart';
-
-abstract class Watcher {
-  /// The path to the file or directory whose contents are being monitored.
-  String get path;
-
-  /// The broadcast [Stream] of events that have occurred to the watched file or
-  /// files in the watched directory.
-  ///
-  /// Changes will only be monitored while this stream has subscribers. Any
-  /// changes that occur during periods when there are no subscribers will not
-  /// be reported the next time a subscriber is added.
-  Stream<WatchEvent> get events;
-
-  /// Whether the watcher is initialized and watching for changes.
-  ///
-  /// This is true if and only if [ready] is complete.
-  bool get isReady;
-
-  /// A [Future] that completes when the watcher is initialized and watching for
-  /// changes.
-  ///
-  /// If the watcher is not currently monitoring the file or directory (because
-  /// there are no subscribers to [events]), this returns a future that isn't
-  /// complete yet. It will complete when a subscriber starts listening and the
-  /// watcher finishes any initialization work it needs to do.
-  ///
-  /// If the watcher is already monitoring, this returns an already complete
-  /// future.
-  Future get ready;
-
-  /// Creates a new [DirectoryWatcher] or [FileWatcher] monitoring [path],
-  /// depending on whether it's a file or directory.
-  ///
-  /// If a native watcher is available for this platform, this will use it.
-  /// Otherwise, it will fall back to a polling watcher. Notably, watching
-  /// individual files is not natively supported on Windows, although watching
-  /// directories is.
-  ///
-  /// If [pollingDelay] is passed, it specifies the amount of time the watcher
-  /// will pause between successive polls of the contents of [path]. Making this
-  /// shorter will give more immediate feedback at the expense of doing more IO
-  /// and higher CPU usage. Defaults to one second. Ignored for non-polling
-  /// watchers.
-  factory Watcher(String path, {Duration pollingDelay}) {
-    if (new File(path).existsSync()) {
-      return new FileWatcher(path, pollingDelay: pollingDelay);
-    } else {
-      return new DirectoryWatcher(path, pollingDelay: pollingDelay);
-    }
-  }
-}