Get rid of a lot of () for getters.

lib/html/src/AnimationEventWrappingImplementation.dart

Index: lib/html/src/AnimationEventWrappingImplementation.dart
diff --git a/lib/html/src/AnimationEventWrappingImplementation.dart b/lib/html/src/AnimationEventWrappingImplementation.dart
index 711265bfc0fc0a2a8eb1a2c41a684b1814888bd7..e61acbdea979d552778ec416edf55685408aa4cf 100644
--- a/lib/html/src/AnimationEventWrappingImplementation.dart
+++ b/lib/html/src/AnimationEventWrappingImplementation.dart
@@ -7,7 +7,7 @@ class AnimationEventWrappingImplementation extends EventWrappingImplementation i
 
   AnimationEventWrappingImplementation._wrap(ptr) : super._wrap(ptr);
 
-  static String get _eventName() {
+  static String get _eventName {
     if (_name != null) return _name;
 
     try {
@@ -27,7 +27,7 @@ class AnimationEventWrappingImplementation extends EventWrappingImplementation i
     return LevelDom.wrapAnimationEvent(e);
   }
 
-  String get animationName() => _ptr.animationName;
+  String get animationName => _ptr.animationName;
 
-  num get elapsedTime() => _ptr.elapsedTime;
+  num get elapsedTime => _ptr.elapsedTime;
 }