Fixing WheelEvent.deltaMode polyfill after IDL update.

sdk/lib/html/dart2js/html_dart2js.dart

Index: sdk/lib/html/dart2js/html_dart2js.dart
diff --git a/sdk/lib/html/dart2js/html_dart2js.dart b/sdk/lib/html/dart2js/html_dart2js.dart
index f125ed23210f5708d1fa7a816c64e371cb942160..7cf2fcc167e17fffe3fc512823e24a36a7acebf3 100644
--- a/sdk/lib/html/dart2js/html_dart2js.dart
+++ b/sdk/lib/html/dart2js/html_dart2js.dart
@@ -1478,7 +1478,7 @@ class CanvasRenderingContext2D extends CanvasRenderingContext native "*CanvasRen
       '#.lineDashOffset || #.webkitLineDashOffset', this, this);
 
   @DomName('CanvasRenderingContext2D.lineDashOffset')
-  void set lineDashOffset(num value) => JS('void', 
+  void set lineDashOffset(num value) => JS('void',
       'typeof #.lineDashOffset != "undefined" ? #.lineDashOffset = # : '
       '#.webkitLineDashOffset = #', this, this, value, this, value);
 }
@@ -11096,7 +11096,7 @@ class Float32Array extends ArrayBufferView implements JavaScriptIndexingBehavior
 
   @DomName('Float32Array.fromBuffer')
   @DocsEditable
-  factory Float32Array.fromBuffer(ArrayBuffer buffer, [int byteOffset, int length]) => 
+  factory Float32Array.fromBuffer(ArrayBuffer buffer, [int byteOffset, int length]) =>
     _TypedArrayFactoryProvider.createFloat32Array_fromBuffer(buffer, byteOffset, length);
 
   static const int BYTES_PER_ELEMENT = 4;
@@ -11312,7 +11312,7 @@ class Float64Array extends ArrayBufferView implements JavaScriptIndexingBehavior
 
   @DomName('Float64Array.fromBuffer')
   @DocsEditable
-  factory Float64Array.fromBuffer(ArrayBuffer buffer, [int byteOffset, int length]) => 
+  factory Float64Array.fromBuffer(ArrayBuffer buffer, [int byteOffset, int length]) =>
     _TypedArrayFactoryProvider.createFloat64Array_fromBuffer(buffer, byteOffset, length);
 
   static const int BYTES_PER_ELEMENT = 8;
@@ -14173,7 +14173,7 @@ class Int16Array extends ArrayBufferView implements JavaScriptIndexingBehavior,
 
   @DomName('Int16Array.fromBuffer')
   @DocsEditable
-  factory Int16Array.fromBuffer(ArrayBuffer buffer, [int byteOffset, int length]) => 
+  factory Int16Array.fromBuffer(ArrayBuffer buffer, [int byteOffset, int length]) =>
     _TypedArrayFactoryProvider.createInt16Array_fromBuffer(buffer, byteOffset, length);
 
   static const int BYTES_PER_ELEMENT = 2;
@@ -14389,7 +14389,7 @@ class Int32Array extends ArrayBufferView implements JavaScriptIndexingBehavior,
 
   @DomName('Int32Array.fromBuffer')
   @DocsEditable
-  factory Int32Array.fromBuffer(ArrayBuffer buffer, [int byteOffset, int length]) => 
+  factory Int32Array.fromBuffer(ArrayBuffer buffer, [int byteOffset, int length]) =>
     _TypedArrayFactoryProvider.createInt32Array_fromBuffer(buffer, byteOffset, length);
 
   static const int BYTES_PER_ELEMENT = 4;
@@ -14605,7 +14605,7 @@ class Int8Array extends ArrayBufferView implements JavaScriptIndexingBehavior, L
 
   @DomName('Int8Array.fromBuffer')
   @DocsEditable
-  factory Int8Array.fromBuffer(ArrayBuffer buffer, [int byteOffset, int length]) => 
+  factory Int8Array.fromBuffer(ArrayBuffer buffer, [int byteOffset, int length]) =>
     _TypedArrayFactoryProvider.createInt8Array_fromBuffer(buffer, byteOffset, length);
 
   static const int BYTES_PER_ELEMENT = 1;
@@ -19012,17 +19012,17 @@ class RtcPeerConnection extends EventTarget native "*RTCPeerConnection" {
   }
 
   /**
-   * Checks if Real Time Communication (RTC) APIs are supported and enabled on 
+   * Checks if Real Time Communication (RTC) APIs are supported and enabled on
    * the current platform.
    */
   static bool get supported {
     // Currently in Firefox some of the RTC elements are defined but throw an
-    // error unless the user has specifically enabled them in their 
+    // error unless the user has specifically enabled them in their
     // about:config. So we have to construct an element to actually test if RTC
     // is supported at at the given time.
     try {
       var c = new RtcPeerConnection({"iceServers": [ {"url":"stun:foo.com"}]});
-      return c is RtcPeerConnection; 
+      return c is RtcPeerConnection;
     } catch (_) {}
     return false;
   }
@@ -22511,7 +22511,7 @@ class Uint16Array extends ArrayBufferView implements JavaScriptIndexingBehavior,
 
   @DomName('Uint16Array.fromBuffer')
   @DocsEditable
-  factory Uint16Array.fromBuffer(ArrayBuffer buffer, [int byteOffset, int length]) => 
+  factory Uint16Array.fromBuffer(ArrayBuffer buffer, [int byteOffset, int length]) =>
     _TypedArrayFactoryProvider.createUint16Array_fromBuffer(buffer, byteOffset, length);
 
   static const int BYTES_PER_ELEMENT = 2;
@@ -22727,7 +22727,7 @@ class Uint32Array extends ArrayBufferView implements JavaScriptIndexingBehavior,
 
   @DomName('Uint32Array.fromBuffer')
   @DocsEditable
-  factory Uint32Array.fromBuffer(ArrayBuffer buffer, [int byteOffset, int length]) => 
+  factory Uint32Array.fromBuffer(ArrayBuffer buffer, [int byteOffset, int length]) =>
     _TypedArrayFactoryProvider.createUint32Array_fromBuffer(buffer, byteOffset, length);
 
   static const int BYTES_PER_ELEMENT = 4;
@@ -22943,7 +22943,7 @@ class Uint8Array extends ArrayBufferView implements JavaScriptIndexingBehavior,
 
   @DomName('Uint8Array.fromBuffer')
   @DocsEditable
-  factory Uint8Array.fromBuffer(ArrayBuffer buffer, [int byteOffset, int length]) => 
+  factory Uint8Array.fromBuffer(ArrayBuffer buffer, [int byteOffset, int length]) =>
     _TypedArrayFactoryProvider.createUint8Array_fromBuffer(buffer, byteOffset, length);
 
   static const int BYTES_PER_ELEMENT = 1;
@@ -23159,7 +23159,7 @@ class Uint8ClampedArray extends Uint8Array implements JavaScriptIndexingBehavior
 
   @DomName('Uint8ClampedArray.fromBuffer')
   @DocsEditable
-  factory Uint8ClampedArray.fromBuffer(ArrayBuffer buffer, [int byteOffset, int length]) => 
+  factory Uint8ClampedArray.fromBuffer(ArrayBuffer buffer, [int byteOffset, int length]) =>
     _TypedArrayFactoryProvider.createUint8ClampedArray_fromBuffer(buffer, byteOffset, length);
 
   // Use implementation from Uint8Array.
@@ -25359,10 +25359,6 @@ class WheelEvent extends MouseEvent native "*WheelEvent" {
 
   static const int DOM_DELTA_PIXEL = 0x00;
 
-  @DomName('WheelEvent.deltaMode')
-  @DocsEditable
-  final int deltaMode;
-
   @JSName('webkitDirectionInvertedFromDevice')
   @DomName('WheelEvent.webkitDirectionInvertedFromDevice')
   @DocsEditable
@@ -25435,6 +25431,15 @@ class WheelEvent extends MouseEvent native "*WheelEvent" {
         'deltaX is not supported');
   }
 
+  @DomName('WheelEvent.deltaMode')
+  int get deltaMode {
+    if (JS('bool', '!!(#.deltaMode)', this)) {
+      return JS('int', '#.deltaMode', this);
+    }
+    // If not available then we're poly-filling and doing pixel scroll.
+    return 0;
+  }
+
   num get _deltaY => JS('num', '#.deltaY', this);
   num get _deltaX => JS('num', '#.deltaX', this);
   num get _wheelDelta => JS('num', '#.wheelDelta', this);
@@ -25503,7 +25508,7 @@ class Window extends EventTarget implements WindowBase native "@*DOMWindow" {
    * 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);
   }
   /**
@@ -25534,7 +25539,7 @@ class Window extends EventTarget implements WindowBase native "@*DOMWindow" {
    * If you need to later cancel this animation, use [requestAnimationFrame]
    * instead.
    *
-   * Note: The code that runs when the future completes should call 
+   * Note: The code that runs when the future completes should call
    * [animationFrame] again for the animation to continue.
    */
   Future<num> get animationFrame {
@@ -25609,7 +25614,7 @@ class Window extends EventTarget implements WindowBase native "@*DOMWindow" {
 
   /**
    * Called to draw an animation frame and then request the window to repaint
-   * after [callback] has finished (creating the animation). 
+   * after [callback] has finished (creating the animation).
    *
    * Use this method only if you need to later call [cancelAnimationFrame]. If
    * not, the preferred Dart idiom is to set animation frames by calling
@@ -30088,9 +30093,9 @@ class KeyboardEventController {
 
 
 /**
- * Defines the keycode values for keys that are returned by 
+ * Defines the keycode values for keys that are returned by
  * KeyboardEvent.keyCode.
- * 
+ *
  * Important note: There is substantial divergence in how different browsers
  * handle keycodes and their variants in different locales/keyboard layouts. We
  * provide these constants to help make code processing keys more readable.
@@ -30098,7 +30103,7 @@ class KeyboardEventController {
 abstract class KeyCode {
   // These constant names were borrowed from Closure's Keycode enumeration
   // class.
-  // http://closure-library.googlecode.com/svn/docs/closure_goog_events_keycodes.js.source.html  
+  // http://closure-library.googlecode.com/svn/docs/closure_goog_events_keycodes.js.source.html
   static const int WIN_KEY_FF_LINUX = 0;
   static const int MAC_ENTER = 3;
   static const int BACKSPACE = 8;
@@ -30293,12 +30298,12 @@ abstract class KeyCode {
         (keyCode >= A && keyCode <= Z)) {
       return true;
     }
- 
+
     // Safari sends zero key code for non-latin characters.
     if (_Device.isWebKit && keyCode == 0) {
       return true;
     }
- 
+
     return (keyCode == SPACE || keyCode == QUESTION_MARK || keyCode == NUM_PLUS
         || keyCode == NUM_MINUS || keyCode == NUM_PERIOD ||
         keyCode == NUM_DIVISION || keyCode == SEMICOLON ||
@@ -32086,7 +32091,7 @@ class FixedSizeListIterator<T> implements Iterator<T> {
   final int _length;  // Cache array length for faster access.
   int _position;
   T _current;
-  
+
   FixedSizeListIterator(List<T> array)
       : _array = array,
         _position = -1,