Revert "Add ticks counter to Timer."

pkg/dev_compiler/tool/input_sdk/private/preambles/d8.js

 // Copyright (c) 2014, 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.
 
 // Javascript preamble, that lets the output of dart2js run on V8's d8 shell.
 
 // Node wraps files and provides them with a different `this`. The global
 // `this` can be accessed through `global`.
 
 var self = this;
@@ skipping 67 matching lines @@
   var timerIds = {};
   var timerIdCounter = 1;  // Counter used to assign ids.
 
   // Zero-timer queue as simple array queue using push/shift.
   var zeroTimerQueue = [];
 
   function addTimer(f, ms) {
     var id = timerIdCounter++;
     f.$timerId = id;
     timerIds[id] = f;
-    if (ms == 0 && !isNextTimerDue()) {
+    if (ms == 0) {
       zeroTimerQueue.push(f);
     } else {
       addDelayedTimer(f, ms);
     }
     return id;
   }
 
   function nextZeroTimer() {
     while (zeroTimerQueue.length > 0) {
       var action = zeroTimerQueue.shift();
@@ skipping 28 matching lines @@
     // Install the mock Date object only once.
     // Following calls to "now" will just use the new (mocked) Date.now
     // method directly.
     installMockDate();
     now = Date.now;
     return Date.now();
   };
   var originalDate = Date;
   var originalNow = originalDate.now;
   function advanceTimeTo(time) {
-    var now = originalNow();
-    if (timeOffset < time - now) {
-      timeOffset = time - now;
-    }
+    timeOffset = time - originalNow();
   }
   function installMockDate() {
     var NewDate = function Date(Y, M, D, h, m, s, ms) {
       if (this instanceof Date) {
         // Assume a construct call.
         switch (arguments.length) {
           case 0:  return new originalDate(originalNow() + timeOffset);
           case 1:  return new originalDate(Y);
           case 2:  return new originalDate(Y, M);
           case 3:  return new originalDate(Y, M, D);
@@ skipping 24 matching lines @@
       timerList = [timeout, f];
       timerIndex[timeout] = timerList;
       var index = timerHeap.length;
       timerHeap.length += 1;
       bubbleUp(index, timeout, timerList);
     } else {
       timerList.push(f);
     }
   }
 
-  function isNextTimerDue() {
-    if (timerHeap.length == 0) return false;
-    var head = timerHeap[0];
-    return head[0] < originalNow() + timeOffset;
-  }
-
   function nextDelayedTimerQueue() {
     if (timerHeap.length == 0) return null;
     var result = timerHeap[0];
     var last = timerHeap.pop();
     if (timerHeap.length > 0) {
       bubbleDown(0, last[0], last);
     }
     return result;
   }
 
@@ skipping 81 matching lines @@
     var action = function() { main(args); }
     eventLoop(action);
   };
   self.setTimeout = addTimer;
   self.clearTimeout = cancelTimer;
   self.setInterval = addInterval;
   self.clearInterval = cancelTimer;
   self.scheduleImmediate = addTask;
   self.self = self;
 })(self);