Reapply remove setTimeout, take 3.

sdk/lib/html/dartium/html_dartium.dart

Index: sdk/lib/html/dartium/html_dartium.dart
diff --git a/sdk/lib/html/dartium/html_dartium.dart b/sdk/lib/html/dartium/html_dartium.dart
index 13c8ee3f9e0a75673e184aac276274ee6c60ff26..a9f82de62e133cfb28e39a275f7f6d2d0f52b9c6 100644
--- a/sdk/lib/html/dartium/html_dartium.dart
+++ b/sdk/lib/html/dartium/html_dartium.dart
@@ -28192,19 +28192,23 @@ class Window extends EventTarget implements WindowBase {
   /**
    * Executes a [callback] after the immediate execution stack has completed.
    *
-   * This will cause the callback to be executed after all processing has
+   * This differs from using Timer.run(callback)
+   * because Timer will run in about 4-15 milliseconds, depending on browser,
+   * depending on load. [setImmediate], in contrast, makes browser-specific
+   * changes in behavior to attempt to run immediately after the current
+   * frame unwinds, causing the future to complete after all processing has
    * completed for the current event, but before any subsequent events.
    */
-  void setImmediate(TimeoutHandler callback) {
+  void setImmediate(TimeoutHandler callback) { 
     _addMicrotaskCallback(callback);
   }
-
   /**
    * Lookup a port by its [name].  Return null if no port is
    * registered under [name].
    */
-  lookupPort(String name) {
-    var port = json.parse(document.documentElement.attributes['dart-port:$name']);
+  SendPortSync lookupPort(String name) {
+    var port =
+        json.parse(document.documentElement.attributes['dart-port:$name']);
     return _deserialize(port);
   }
 
@@ -28213,9 +28217,26 @@ class Window extends EventTarget implements WindowBase {
    * port may be retrieved by any isolate (or JavaScript script)
    * running in this window.
    */
-  registerPort(String name, var port) {
+  void registerPort(String name, var port) {
     var serialized = _serialize(port);
-    document.documentElement.attributes['dart-port:$name'] = json.stringify(serialized);
+    document.documentElement.attributes['dart-port:$name'] =
+        json.stringify(serialized);
+  }
+
+  /**
+   * Returns a Future that completes just before the window is about to repaint
+   * so the user can draw an animation frame
+   *
+   * If you need to later cancel this animation, use [requestAnimationFrame]
+   * instead.
+   *
+   * Note: The code that runs when the future completes should call 
+   * [animationFrame] again for the animation to continue.
+   */
+  Future<num> get animationFrame {
+    var completer = new Completer<int>();
+    requestAnimationFrame(completer.complete);
+    return completer.future;
   }
 
   /// Checks if _setImmediate is supported.
@@ -28556,11 +28577,11 @@ class Window extends EventTarget implements WindowBase {
 
   @DomName('DOMWindow.clearInterval')
   @DocsEditable
-  void clearInterval(int handle) native "DOMWindow_clearInterval_Callback";
+  void _clearInterval(int handle) native "DOMWindow_clearInterval_Callback";
 
   @DomName('DOMWindow.clearTimeout')
   @DocsEditable
-  void clearTimeout(int handle) native "DOMWindow_clearTimeout_Callback";
+  void _clearTimeout(int handle) native "DOMWindow_clearTimeout_Callback";
 
   @DomName('DOMWindow.close')
   @DocsEditable
@@ -28655,11 +28676,11 @@ class Window extends EventTarget implements WindowBase {
 
   @DomName('DOMWindow.setInterval')
   @DocsEditable
-  int setInterval(TimeoutHandler handler, int timeout) native "DOMWindow_setInterval_Callback";
+  int _setInterval(TimeoutHandler handler, int timeout) native "DOMWindow_setInterval_Callback";
 
   @DomName('DOMWindow.setTimeout')
   @DocsEditable
-  int setTimeout(TimeoutHandler handler, int timeout) native "DOMWindow_setTimeout_Callback";
+  int _setTimeout(TimeoutHandler handler, int timeout) native "DOMWindow_setTimeout_Callback";
 
   @DomName('DOMWindow.showModalDialog')
   @DocsEditable
@@ -33852,11 +33873,11 @@ get _timerFactoryClosure => (int milliSeconds, void callback(Timer timer), bool
   var maker;
   var canceller;
   if (repeating) {
-    maker = window.setInterval;
-    canceller = window.clearInterval;
+    maker = window._setInterval;
+    canceller = window._clearInterval;
   } else {
-    maker = window.setTimeout;
-    canceller = window.clearTimeout;
+    maker = window._setTimeout;
+    canceller = window._clearTimeout;
   }
   Timer timer;
   final int id = maker(() { callback(timer); }, milliSeconds);