Include control clip in list of clip-related properties.

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/)
@@ skipping 406 matching lines @@
   }
 }
 
 LayoutObject* LayoutObject::nextInPreOrder() const {
   if (LayoutObject* o = slowFirstChild())
     return o;
 
   return nextInPreOrderAfterChildren();
 }
 
+bool LayoutObject::hasClipRelatedProperty() const {
+  if (hasClip() || hasOverflowClip() || hasClipPath() ||
+      style()->containsPaint())
+    return true;
+  if (isBox() && toLayoutBox(this)->hasControlClip())
+    return true;
+  return false;
+}
+
 LayoutObject* LayoutObject::nextInPreOrderAfterChildren() const {
   LayoutObject* o = nextSibling();
   if (!o) {
     o = parent();
     while (o && !o->nextSibling())
       o = o->parent();
     if (o)
       o = o->nextSibling();
   }
 
@@ skipping 3208 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