Improve the RenderObject.toString() logic so that there's not blank lines everywhere and to general…

sky/sdk/lib/framework/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 '../node.dart';
 import '../scheduler.dart' as scheduler;
 import 'dart:math' as math;
 import 'dart:sky' as sky;
 
 class ParentData {
@@ skipping 206 matching lines @@
   //   // converted to the child's coordinate origin, and stop at the first child
   //   // that returns true.
   //   // Then, add yourself to /result/, and return true.
   // }
   // You must not add yourself to /result/ if you return false.
 
 
   String toString([String prefix = '']) {
     String header = '${runtimeType}\n';
     prefix += '  ';
-    String settings = '${debugDescribeSettings(prefix)}';
-    if (settings != '')
-      settings += '\n';
-    return '${header}${settings}${debugDescribeChildren(prefix)}';
+    return '${header}${debugDescribeSettings(prefix)}${debugDescribeChildren(prefix)}';
   }
-  String debugDescribeSettings(String prefix) => '${prefix}parentData: ${parentData}';
+  String debugDescribeSettings(String prefix) => '${prefix}parentData: ${parentData}\n';
   String debugDescribeChildren(String prefix) => '';
 
 }
 
 class HitTestResult {
   final List<RenderObject> path = new List<RenderObject>();
 
   RenderObject get result => path.first;
 
   void add(RenderObject node) {
@@ skipping 175 matching lines @@
   ChildType childAfter(ChildType child) {
     assert(child.parentData is ParentDataType);
     return child.parentData.nextSibling;
   }
 
   String debugDescribeChildren(String prefix) {
     String result = '';
     int count = 1;
     ChildType child = _firstChild;
     while (child != null) {
-      if (result != '')
-        result += '\n';
       result += '${prefix}child ${count}: ${child.toString(prefix)}';
       count += 1;
       child = child.parentData.nextSibling;
     }
     return result;
   }
 }