Put back the setter being used by the test harness...

sky/sdk/lib/rendering/object.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 'dart:sky' show Point, Offset, Size, Rect, Color, Paint, Path;
 
 import '../base/debug.dart';
 import '../base/hit_test.dart';
@@ skipping 285 matching lines @@
     int oldAngle, // 0..3
     int newAngle, // 0..3
     Duration time
   }) { }
 
 
   // PAINTING
 
   static bool _debugDoingPaint = false;
   static bool get debugDoingPaint => _debugDoingPaint;
+  static void set debugDoingPaint(bool value) {
+    _debugDoingPaint = value;
+  }
   bool _debugDoingThisPaint = false;
   bool get debugDoingThisPaint => _debugDoingThisPaint;
   static RenderObject _debugActivePaint = null;
   static RenderObject get debugActivePaint => _debugActivePaint;
 
   static List<RenderObject> _nodesNeedingPaint = new List<RenderObject>();
 
   final sky.PaintingNode _paintingNode = new sky.PaintingNode();
   sky.PaintingNode get paintingNode {
     assert(createNewDisplayList);
@@ skipping 381 matching lines @@
     int count = 1;
     ChildType child = _firstChild;
     while (child != null) {
       result += '${prefix}child ${count}: ${child.toString(prefix)}';
       count += 1;
       child = child.parentData.nextSibling;
     }
     return result;
   }
 }