[CSS Regions] Elements in a region should be assignable to a named flow

Source/core/dom/Node.cpp

 /*
  * Copyright (C) 1999 Lars Knoll (knoll@kde.org)
  *           (C) 1999 Antti Koivisto (koivisto@kde.org)
  *           (C) 2001 Dirk Mueller (mueller@kde.org)
  * Copyright (C) 2004, 2005, 2006, 2007, 2008, 2009, 2010, 2011 Apple Inc. All rights reserved.
  * Copyright (C) 2008 Nokia Corporation and/or its subsidiary(-ies)
  * Copyright (C) 2009 Torch Mobile Inc. All rights reserved. (http://www.torchmobile.com/)
  *
  * This library is free software; you can redistribute it and/or
  * modify it under the terms of the GNU Library General Public
@@ skipping 64 matching lines @@
 #include "core/html/HTMLFrameOwnerElement.h"
 #include "core/html/HTMLStyleElement.h"
 #include "core/html/RadioNodeList.h"
 #include "core/inspector/InspectorCounters.h"
 #include "core/page/ContextMenuController.h"
 #include "core/page/EventHandler.h"
 #include "core/page/Frame.h"
 #include "core/page/Page.h"
 #include "core/page/Settings.h"
 #include "core/platform/Partitions.h"
+#include "core/rendering/FlowThreadController.h"
 #include "core/rendering/RenderBox.h"
 #include "wtf/HashSet.h"
 #include "wtf/PassOwnPtr.h"
 #include "wtf/RefCountedLeakCounter.h"
 #include "wtf/UnusedParam.h"
 #include "wtf/Vector.h"
 #include "wtf/text/CString.h"
 #include "wtf/text/StringBuilder.h"
 
 using namespace std;
@@ skipping 1091 matching lines @@
     if (renderer()) {
         RenderStyle* style = renderer()->style();
         // We allow selections to begin within an element that has -webkit-user-select: none set,
         // but if the element is draggable then dragging should take priority over selection.
         if (style->userDrag() == DRAG_ELEMENT && style->userSelect() == SELECT_NONE)
             return false;
     }
     return parentOrShadowHostNode() ? parentOrShadowHostNode()->canStartSelection() : true;
 }
 
+bool Node::isRegisteredWithNamedFlow(const FlowThreadController* flowThreadController) const
+{
+    ASSERT(flowThreadController);
+    return flowThreadController->isContentNodeRegisteredWithAnyNamedFlow(this);

[esprehn, 2013/07/01 18:27:19]

Don't pass the flowThreadContorller in, just get it inside here.

document()->renderView()->flowThreadController()

+}
+
 Element* Node::shadowHost() const
 {
     if (ShadowRoot* root = containingShadowRoot())
         return root->host();
     return 0;
 }
 
 Node* Node::deprecatedShadowAncestorNode() const
 {
     if (ShadowRoot* root = containingShadowRoot())
@@ skipping 1524 matching lines @@
         node->showTreeForThis();
 }
 
 void showNodePath(const WebCore::Node* node)
 {
     if (node)
         node->showNodePathForThis();
 }
 
 #endif