Verify that callers correctly set parentUsesSize if they use the child's size (and fix a few cases …

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 'dart:math' as math;
 import 'dart:sky' as sky;
 import 'dart:sky' show Point, Size, Rect, Color, Paint, Path;
 
 import '../node.dart';
 import '../scheduler.dart' as scheduler;
@@ skipping 110 matching lines @@
     _relayoutSubtreeRoot = this;
     _nodesNeedingLayout.add(this);
     scheduler.ensureVisualUpdate();
   }
   static void flushLayout() {
     _debugDoingLayout = true;
     List<RenderObject> dirtyNodes = _nodesNeedingLayout;
     _nodesNeedingLayout = new List<RenderObject>();
     dirtyNodes..sort((a, b) => a.depth - b.depth)..forEach((node) {
       if (node._needsLayout && node.attached)
-        node._doLayout();
+        node.layoutWithoutResize();
     });
     _debugDoingLayout = false;
   }
-  void _doLayout() {
+  void layoutWithoutResize() {
     try {
       assert(_relayoutSubtreeRoot == this);
       performLayout();
     } catch (e, stack) {
       print('Exception raised during layout of ${this}: ${e}');
       print(stack);
       return;
     }
     _needsLayout = false;
   }
@@ skipping 311 matching lines @@
     int count = 1;
     ChildType child = _firstChild;
     while (child != null) {
       result += '${prefix}child ${count}: ${child.toString(prefix)}';
       count += 1;
       child = child.parentData.nextSibling;
     }
     return result;
   }
 }