Fix crash in continuations.

sky/engine/core/rendering/style/RenderStyle.cpp

 /*
  * Copyright (C) 1999 Antti Koivisto (koivisto@kde.org)
  * Copyright (C) 2004, 2005, 2006, 2007, 2008, 2009, 2010 Apple Inc. All rights reserved.
  * Copyright (C) 2011 Adobe Systems Incorporated. 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 209 matching lines @@
 }
 
 bool RenderStyle::inheritedDataShared(const RenderStyle* other) const
 {
     // This is a fast check that only looks if the data structures are shared.
     return inherited_flags == other->inherited_flags
         && inherited.get() == other->inherited.get()
         && rareInheritedData.get() == other->rareInheritedData.get();
 }
 
+bool RenderStyle::requiresOnlyBlockChildren()
+{
+    switch (display()) {
+    case PARAGRAPH:
+    case INLINE:
+        return false;
+
+    case BLOCK:
+    case FLEX:
+    case INLINE_FLEX:
+    case INLINE_BLOCK:
+        return true;
+
+    case NONE:
+        ASSERT_NOT_REACHED();
+        return false;
+    }
+
+    ASSERT_NOT_REACHED();
+    return false;
+}
+
 static bool positionedObjectMovedOnly(const LengthBox& a, const LengthBox& b, const Length& width)
 {
     // If any unit types are different, then we can't guarantee
     // that this was just a movement.
     if (a.left().type() != b.left().type()
         || a.right().type() != b.right().type()
         || a.top().type() != b.top().type()
         || a.bottom().type() != b.bottom().type())
         return false;
 
@@ skipping 1019 matching lines @@
     // right
     radiiSum = radii.topRight().height() + radii.bottomRight().height();
     if (radiiSum > rect.height())
         factor = std::min(rect.height() / radiiSum, factor);
 
     ASSERT(factor <= 1);
     return factor;
 }
 
 } // namespace blink