Remove caching of contents paint 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 3562 matching lines @@
       is_background_attachment_fixed_object)
     return;
   bitfields_.SetIsBackgroundAttachmentFixedObject(
       is_background_attachment_fixed_object);
   if (is_background_attachment_fixed_object)
     GetFrameView()->AddBackgroundAttachmentFixedObject(this);
   else
     GetFrameView()->RemoveBackgroundAttachmentFixedObject(this);
 }
 
+PropertyTreeState LayoutObject::ContentsProperties() const {
+  DCHECK(RuntimeEnabledFeatures::slimmingPaintInvalidationEnabled());
+  return rare_paint_data_->ContentsProperties();
+}
+
 RarePaintData& LayoutObject::EnsureRarePaintData() {
   if (!rare_paint_data_)
     rare_paint_data_ = WTF::MakeUnique<RarePaintData>();
   return *rare_paint_data_.get();
 }
 
 LayoutRect LayoutObject::DebugRect() const {
   LayoutRect rect;
   LayoutBlock* block = ContainingBlock();
   if (block)
@@ skipping 55 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