Allow whitespace inside anonymous table cells

Source/core/dom/Text.cpp

 /*
  * Copyright (C) 1999 Lars Knoll (knoll@kde.org)
  *           (C) 1999 Antti Koivisto (koivisto@kde.org)
  * Copyright (C) 2003, 2004, 2005, 2006, 2007, 2008, 2009 Apple Inc. All rights reserved.
  *
  * This library is free software; you can redistribute it and/or
  * modify it under the terms of the GNU Library General Public
  * License as published by the Free Software Foundation; either
  * version 2 of the License, or (at your option) any later version.
  *
@@ skipping 219 matching lines @@
 Node::NodeType Text::nodeType() const
 {
     return TEXT_NODE;
 }
 
 PassRefPtrWillBeRawPtr<Node> Text::cloneNode(bool /*deep*/)
 {
     return cloneWithData(data());
 }
 
+static inline bool hasGeneratedAnonymousTableCells(const LayoutObject& parent)
+{
+    // We're checking whether the table part has generated anonymous table
+    // part wrappers to hold its contents, so inspecting its first child will suffice.
+    LayoutObject* child = parent.slowFirstChild();
+    if (!child || !child->isAnonymous())
+        return false;
+    if (child->isTableCell())
+        return true;
+    if (child->isTableSection() || child->isTableRow())
+        return hasGeneratedAnonymousTableCells(*child);
+    return false;
+}
+
 static inline bool canHaveWhitespaceChildren(const LayoutObject& parent)
 {
     // <button> should allow whitespace even though LayoutFlexibleBox doesn't.
     if (parent.isLayoutButton())
         return true;
 
+    // Allow whitespace when the text is inside a table, section or row element that
+    // has generated anonymous table cells to hold its contents.
+    if (hasGeneratedAnonymousTableCells(parent))
+        return true;
+
     if (parent.isTable() || parent.isTableRow() || parent.isTableSection()
         || parent.isLayoutTableCol() || parent.isFrameSet()
         || parent.isFlexibleBox() || parent.isLayoutGrid()
         || parent.isSVGRoot()
         || parent.isSVGContainer()
         || parent.isSVGImage()
         || parent.isSVGShape())
         return false;
     return true;
 }
@@ skipping 177 matching lines @@
             result.appendLiteral("; ");
         result.appendLiteral("value=");
         result.append(s);
     }
 
     strncpy(buffer, result.toString().utf8().data(), length - 1);
 }
 #endif
 
 } // namespace blink