Removed Polymer from Observatory deps

packages/polymer/lib/deserialize.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.
-
-library polymer.deserialize;
-
-import 'dart:convert' show JSON;
-
-final _typeHandlers = {
-  String: (x, _) => x,
-  Null: (x, _) => x,
-  DateTime: (x, def) {
-    // TODO(jmesserly): shouldn't need to try-catch here
-    // See: https://code.google.com/p/dart/issues/detail?id=1878
-    try {
-      return DateTime.parse(x);
-    } catch (e) {
-      return def;
-    }
-  },
-  bool: (x, _) => x != 'false',
-  int: (x, def) => int.parse(x, onError: (_) => def),
-  double: (x, def) => double.parse(x, (_) => def),
-};
-
-/// Convert representation of [value] based on [type] and [currentValue].
-Object deserializeValue(String value, Object currentValue, Type type) {
-  var handler = _typeHandlers[type];
-  if (handler != null) return handler(value, currentValue);
-
-  try {
-    // If the string is an object, we can parse is with the JSON library.
-    // include convenience replace for single-quotes. If the author omits
-    // quotes altogether, parse will fail.
-    return JSON.decode(value.replaceAll("'", '"'));
-
-    // TODO(jmesserly): deserialized JSON is not assignable to most objects in
-    // Dart. We should attempt to convert it appropriately.
-  } catch (e) {
-    // The object isn't valid JSON, return the raw value
-    return value;
-  }
-}