RenderNamedFlowThread should not create NodeRenderingContext objects

Source/core/rendering/RenderNamedFlowThread.cpp

 /*
  * Copyright (C) 2012 Apple Inc.  All rights reserved.
  *
  * Redistribution and use in source and binary forms, with or without
  * modification, are permitted provided that the following conditions
  * are met:
  * 1. Redistributions of source code must retain the above copyright
  *    notice, this list of conditions and the following disclaimer.
  * 2. Redistributions in binary form must reproduce the above copyright
  *    notice, this list of conditions and the following disclaimer in the
@@ skipping 11 matching lines @@
  * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
  * OF THIS SOFTWARE, EVEN IF  ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
  */
 
 #include "config.h"
 #include "core/rendering/RenderNamedFlowThread.h"
 
 #include "RuntimeEnabledFeatures.h"
 #include "bindings/v8/ExceptionStatePlaceholder.h"
 #include "core/dom/NamedFlow.h"
-#include "core/dom/NodeRenderingContext.h"
+#include "core/dom/NodeRenderingTraversal.h"
 #include "core/dom/NodeTraversal.h"
 #include "core/dom/Position.h"
 #include "core/dom/Range.h"
 #include "core/dom/Text.h"
 #include "core/inspector/InspectorInstrumentation.h"
 #include "core/rendering/FlowThreadController.h"
 #include "core/rendering/InlineTextBox.h"
 #include "core/rendering/RenderInline.h"
 #include "core/rendering/RenderRegion.h"
 #include "core/rendering/RenderText.h"
@@ skipping 405 matching lines @@
         setMarkForDestruction();
 }
 
 const AtomicString& RenderNamedFlowThread::flowThreadName() const
 {
     return m_namedFlow->name();
 }
 
 bool RenderNamedFlowThread::isChildAllowed(RenderObject* child, RenderStyle* style) const
 {
-    ASSERT(child);
-    ASSERT(style);
-
     if (!child->node())
         return true;
 
     ASSERT(child->node()->isElementNode());
-    RenderObject* parentRenderer = NodeRenderingContext(child->node()).parentRenderer();
-    if (!parentRenderer)
+    Node* originalParent = NodeRenderingTraversal::parent(child->node());
+    if (!originalParent || !originalParent->renderer())
         return true;
 
-    return parentRenderer->isChildAllowed(child, style);
+    return originalParent->renderer()->isChildAllowed(child, style);
 }
 
 void RenderNamedFlowThread::dispatchRegionLayoutUpdateEvent()
 {
     RenderFlowThread::dispatchRegionLayoutUpdateEvent();
     InspectorInstrumentation::didUpdateRegionLayout(document(), m_namedFlow.get());
 
     if (!m_regionLayoutUpdateEventTimer.isActive() && m_namedFlow->hasEventListeners())
         m_regionLayoutUpdateEventTimer.startOneShot(0);
 }
@@ skipping 207 matching lines @@
                     lastEndNode = node;
                 }
             }
         }
         if (foundStartPosition || skipOverOutsideNodes)
             rangeObjects.append(range);
     }
 }
 
 }