Add additive animation support for CSS property background-size

third_party/WebKit/Source/core/style/FillLayer.h

 /*
  * Copyright (C) 2000 Lars Knoll (knoll@kde.org)
  *           (C) 2000 Antti Koivisto (koivisto@kde.org)
  *           (C) 2000 Dirk Mueller (mueller@kde.org)
  * Copyright (C) 2003, 2005, 2006, 2007, 2008 Apple Inc. All rights reserved.
  * Copyright (C) 2006 Graham Dennis (graham.dennis@gmail.com)
  *
  * 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
@@ skipping 106 matching lines @@
     void setBackgroundYOrigin(BackgroundEdgeOrigin origin) { m_backgroundYOrigin = origin; m_backgroundYOriginSet = true; }
     void setAttachment(EFillAttachment attachment) { ASSERT(!m_cachedPropertiesComputed); m_attachment = attachment; m_attachmentSet = true; }
     void setClip(EFillBox b) { ASSERT(!m_cachedPropertiesComputed); m_clip = b; m_clipSet = true; }
     void setOrigin(EFillBox b) { ASSERT(!m_cachedPropertiesComputed); m_origin = b; m_originSet = true; }
     void setRepeatX(EFillRepeat r) { m_repeatX = r; m_repeatXSet = true; }
     void setRepeatY(EFillRepeat r) { m_repeatY = r; m_repeatYSet = true; }
     void setComposite(CompositeOperator c) { m_composite = c; m_compositeSet = true; }
     void setBlendMode(WebBlendMode b) { m_blendMode = b; m_blendModeSet = true; }
     void setSizeType(EFillSizeType b) { m_sizeType = b; }
     void setSizeLength(const LengthSize& length) { m_sizeLength = length; }
-    void setSize(FillSize f) { m_sizeType = f.type; m_sizeLength = f.size; }
+    void setSize(const FillSize& f) { m_sizeType = f.type; m_sizeLength = f.size; }
     void setMaskSourceType(EMaskSourceType m) { m_maskSourceType = m; m_maskSourceTypeSet = true; }
 
     void clearImage() { m_image.clear(); m_imageSet = false; }
     void clearXPosition()
     {
         m_xPosSet = false;
         m_backgroundXOriginSet = false;
     }
     void clearYPosition()
     {
@@ skipping 112 matching lines @@
 
     mutable unsigned m_thisOrNextLayersClipMax : 2; // EFillBox, maximum m_clip value from this to bottom layer
     mutable unsigned m_thisOrNextLayersUseContentBox : 1; // True if any of this or subsequent layers has content-box clip or origin.
     mutable unsigned m_thisOrNextLayersHaveLocalAttachment : 1; // True if any of this or subsequent layers has local attachment.
     mutable unsigned m_cachedPropertiesComputed : 1; // Set once any of the above is accessed. The layers will be frozen thereafter.
 };
 
 } // namespace blink
 
 #endif // FillLayer_h