Change DataPersistent constructor to allow one line initialisation.

third_party/WebKit/Source/core/style/ComputedStyle.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 110 matching lines @@
 }
 
 ALWAYS_INLINE ComputedStyle::ComputedStyle()
     : ComputedStyleBase(), RefCounted<ComputedStyle>() {
   rare_non_inherited_data_.Init();
   rare_non_inherited_data_.Access()->deprecated_flexible_box_data_.Init();
   rare_non_inherited_data_.Access()->flexible_box_data_.Init();
   rare_non_inherited_data_.Access()->multi_col_data_.Init();
   rare_non_inherited_data_.Access()->transform_data_.Init();
   rare_non_inherited_data_.Access()->will_change_data_.Init();
-  rare_non_inherited_data_.Access()->filter_.Init();
-  rare_non_inherited_data_.Access()->backdrop_filter_.Init();
   rare_non_inherited_data_.Access()->grid_data_.Init();
   rare_non_inherited_data_.Access()->grid_item_data_.Init();
   rare_non_inherited_data_.Access()->scroll_snap_data_.Init();
   svg_style_.Init();
 }
 
 ALWAYS_INLINE ComputedStyle::ComputedStyle(const ComputedStyle& o)
     : ComputedStyleBase(o),
       RefCounted<ComputedStyle>(),
       rare_non_inherited_data_(o.rare_non_inherited_data_),
@@ skipping 2208 matching lines @@
     if (value < 0)
       fvalue -= 0.5f;
     else
       fvalue += 0.5f;
   }
 
   return RoundForImpreciseConversion<int>(fvalue / zoom_factor);
 }
 
 }  // namespace blink