Fix gesture events in fn2

sky/examples/raw/sector_layout.dart

 // Copyright 2015 The Chromium Authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 import 'dart:math' as math;
 import 'dart:sky' as sky;
 import 'package:sky/framework/app.dart';
 import 'package:sky/framework/rendering/box.dart';
 import 'package:sky/framework/rendering/node.dart';
 
@@ skipping 464 matching lines @@
 
   SectorDimensions getIntrinsicDimensions(SectorConstraints constraints, double radius) {
     return new SectorDimensions.withConstraints(constraints, deltaTheta: 1.0); // 1.0 radians
   }
 
   void performLayout() {
     deltaRadius = constraints.constrainDeltaRadius(desiredDeltaRadius);
     deltaTheta = constraints.constrainDeltaTheta(desiredDeltaTheta);
   }
 
-  void handlePointer(sky.PointerEvent event) {
+  void handleEvent(sky.Event event) {
     if (event.type == 'pointerdown')
       decoration = new BoxDecoration(backgroundColor: const sky.Color(0xFFFF0000));
     else if (event.type == 'pointerup')
       decoration = new BoxDecoration(backgroundColor: backgroundColor);
   }
 }
 
 AppView app;
 
 void main() {
 
   var rootCircle = new RenderSectorRing(padding: 20.0);
   rootCircle.add(new RenderSolidColor(const sky.Color(0xFF00FFFF), desiredDeltaTheta: kTwoPi * 0.15));
   rootCircle.add(new RenderSolidColor(const sky.Color(0xFF0000FF), desiredDeltaTheta: kTwoPi * 0.4));
   var stack = new RenderSectorSlice(padding: 2.0);
   stack.add(new RenderSolidColor(const sky.Color(0xFFFFFF00), desiredDeltaRadius: 20.0));
   stack.add(new RenderSolidColor(const sky.Color(0xFFFF9000), desiredDeltaRadius: 20.0));
   stack.add(new RenderSolidColor(const sky.Color(0xFF00FF00)));
   rootCircle.add(stack);
 
   var root = new RenderBoxToRenderSectorAdapter(innerRadius: 50.0, child: rootCircle);
   app = new AppView(root);
 }