Make isUtc a getter, change some method names in Date.

samples/chat/chat_server_lib.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("chat_server");
 #import("dart:io");
 #import("dart:isolate");
 #import("dart:json");
 
 class ChatServer extends IsolatedServer {
@@ skipping 617 matching lines @@
 // constructor arument specifies the time range in milliseconds. The
 // buckets are in the list _buckets organized at a circular buffer
 // with _currentBucket marking the bucket where an event was last
 // recorded. A current sum of the content of all buckets except the
 // one pointed a by _currentBucket is kept in _sum.
 class Rate {
   Rate([int timeRange = 1000, int buckets = 10])
       : _timeRange = timeRange,
         _buckets = new List(buckets + 1),  // Current bucket is not in the sum.
         _currentBucket = 0,
-        _currentBucketTime = new Date.now().value,
+        _currentBucketTime = new Date.now().millisecondsSinceEpoch,
         _sum = 0 {
     _bucketTimeRange = (_timeRange / buckets).toInt();
     for (int i = 0; i < _buckets.length; i++) {
       _buckets[i] = 0;
     }
   }
 
   // Record the specified number of events.
   void record(int count) {
     _timePassed();
     _buckets[_currentBucket] = _buckets[_currentBucket] + count;
   }
 
   // Returns the current rate of events for the time range.
   num get rate() {
     _timePassed();
     return _sum;
   }
 
   // Update the current sum as time passes. If time has passed by the
   // current bucket add it to the sum and move forward to the bucket
   // matching the current time. Subtract all buckets vacated from the
   // sum as bucket for current time is located.
   void _timePassed() {
-    int time = new Date.now().value;
+    int time = new Date.now().millisecondsSinceEpoch;
     if (time < _currentBucketTime + _bucketTimeRange) {
       // Still same bucket.
       return;
     }
 
     // Add collected bucket to the sum.
     _sum += _buckets[_currentBucket];
 
     // Find the bucket for the current time. Subtract all buckets
     // reused from the sum.
     while (time >= _currentBucketTime + _bucketTimeRange) {
       _currentBucket = (_currentBucket + 1) % _buckets.length;
       _sum -= _buckets[_currentBucket];
       _buckets[_currentBucket] = 0;
       _currentBucketTime += _bucketTimeRange;
     }
   }
 
   int _timeRange;
   List<int> _buckets;
   int _currentBucket;
   int _currentBucketTime;
   num _bucketTimeRange;
   int _sum;
 }