[Layout API] Use Document::layoutViewItem() in ViewportStyleResolver

third_party/WebKit/Source/core/css/CSSToLengthConversionData.h

 /*
  * Copyright (C) 2013 Google Inc. All rights reserved.
  *
  * Redistribution and use in source and binary forms, with or without
  * modification, are permitted provided that the following conditions are
  * met:
  *
  *     * Redistributions of source code must retain the above copyright
  * notice, this list of conditions and the following disclaimer.
  *     * Redistributions in binary form must reproduce the above
@@ skipping 24 matching lines @@
 #include "core/css/CSSPrimitiveValue.h"
 #include "platform/geometry/DoubleSize.h"
 #include "wtf/Allocator.h"
 #include "wtf/Assertions.h"
 #include "wtf/MathExtras.h"
 #include <limits>
 
 namespace blink {
 
 class ComputedStyle;
-class LayoutView;
+class LayoutViewItem;
 class Font;
 
 class CORE_EXPORT CSSToLengthConversionData {
     DISALLOW_NEW();
 public:
 
     class FontSizes {
         DISALLOW_NEW();
     public:
         FontSizes() : m_em(0), m_rem(0), m_font(nullptr) { }
         FontSizes(float em, float rem, const Font*);
         FontSizes(const ComputedStyle*, const ComputedStyle* rootStyle);
 
         float em() const { return m_em; }
         float rem() const { return m_rem; }
         float ex() const;
         float ch() const;
     private:
         float m_em;
         float m_rem;
         const Font* m_font;
     };
 
     class ViewportSize {
         DISALLOW_NEW();
     public:
         ViewportSize() { }
         ViewportSize(double width, double height) : m_size(width, height) { }
-        explicit ViewportSize(const LayoutView*);
+        explicit ViewportSize(const LayoutViewItem);

[rune, 2016/06/10 16:38:48]

Why not const ref? Is this as efficient nowadays?

 
         double width() const { return m_size.width(); }
         double height() const { return m_size.height(); }
     private:
         DoubleSize m_size;
     };
 
     CSSToLengthConversionData() { }
     CSSToLengthConversionData(const ComputedStyle*, const FontSizes&, const ViewportSize&, float zoom);
-    CSSToLengthConversionData(const ComputedStyle* currStyle, const ComputedStyle* rootStyle, const LayoutView*, float zoom);
+    CSSToLengthConversionData(const ComputedStyle* currStyle, const ComputedStyle* rootStyle, const LayoutViewItem, float zoom);

[rune, 2016/06/10 16:38:49]

ditto (const ref)

 
     float zoom() const { return m_zoom; }
 
     float emFontSize() const { return m_fontSizes.em(); }
     float remFontSize() const;
     float exFontSize() const { return m_fontSizes.ex(); }
     float chFontSize() const { return m_fontSizes.ch(); }
 
     // Accessing these marks the style as having viewport units
     double viewportWidthPercent() const;
@@ skipping 18 matching lines @@
 private:
     const ComputedStyle* m_style;
     FontSizes m_fontSizes;
     ViewportSize m_viewportSize;
     float m_zoom;
 };
 
 } // namespace blink
 
 #endif