Add Length::isPercent and use it in tables.

third_party/WebKit/Source/core/layout/LayoutObject.cpp

 /*
  * Copyright (C) 1999 Lars Knoll (knoll@kde.org)
  *           (C) 1999 Antti Koivisto (koivisto@kde.org)
  *           (C) 2000 Dirk Mueller (mueller@kde.org)
  *           (C) 2004 Allan Sandfeld Jensen (kde@carewolf.com)
  * Copyright (C) 2004, 2005, 2006, 2007, 2008, 2011 Apple Inc. All rights reserved.
  * Copyright (C) 2009 Google Inc. All rights reserved.
  * Copyright (C) 2009 Torch Mobile Inc. All rights reserved. (http://www.torchmobile.com/)
  *
  * This library is free software; you can redistribute it and/or
@@ skipping 687 matching lines @@
     // Table parts can't be relayout roots since the table is responsible for layouting all the parts.
     if (object->isTablePart())
         return false;
 
     if (object->style()->containsLayout() && object->style()->containsSize())
         return true;
 
     if (!object->hasOverflowClip())
         return false;
 
-    if (object->style()->width().isIntrinsicOrAuto() || object->style()->height().isIntrinsicOrAuto() || object->style()->height().hasPercent())
+    if (object->style()->width().isIntrinsicOrAuto() || object->style()->height().isIntrinsicOrAuto() || object->style()->height().isPercentOrCalc())
         return false;
 
     // Scrollbar parts can be removed during layout. Avoid the complexity of having to deal with that.
     if (object->isLayoutScrollbarPart())
         return false;
 
     // In general we can't relayout a flex item independently of its container; not only is the result
     // incorrect due to the override size that's set, it also messes with the cached main size on the flexbox.
     if (object->isBox() && toLayoutBox(object)->isFlexItem())
         return false;
@@ skipping 2514 matching lines @@
         const blink::LayoutObject* root = object1;
         while (root->parent())
             root = root->parent();
         root->showLayoutTreeAndMark(object1, "*", object2, "-", 0);
     } else {
         WTFLogAlways("%s", "Cannot showLayoutTree. Root is (nil)");
     }
 }
 
 #endif