Removed Polymer from Observatory deps

packages/polymer/lib/src/job.dart

-// 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.
-
-part of polymer;
-
-/// Like [Timer] but can be restarted, and if no duration is supplied uses
-/// [window.requestAnimationFrame] instead of a 0-duration timer.
-// TODO(jmesserly): need to find a better name here. Also this feels more like a
-// system level API, but doesn't map exactly to any of our other primitives.
-class PolymerJob {
-  Function _callback;
-  Timer _timer;
-  int _id; // for requestAnimationFrame
-
-  PolymerJob._();
-
-  bool get isScheduled => _timer != null || _id != null;
-
-  /// Starts the job. If the job is already running, it will [stop] first.
-  void start(void callback(), [Duration wait]) {
-    stop();
-    _callback = callback;
-    if (wait == null) {
-      _id = window.requestAnimationFrame((_) => complete());
-    } else {
-      _timer = new Timer(wait, complete);
-    }
-  }
-
-  /// Stops the job. It can be restarted by calling [start] with a new callback.
-  void stop() {
-    if (_id != null) {
-      window.cancelAnimationFrame(_id);
-      _id = null;
-    }
-    if (_timer != null) {
-      _timer.cancel();
-      _timer = null;
-    }
-  }
-
-  /// Synchronously completes the job.
-  void complete() {
-    if (isScheduled) {
-      stop();
-      _callback();
-    }
-  }
-}