Make RenderObject::style() return a const object

Source/core/layout/LayoutThemeChromiumSkia.h

 /*
  * This file is part of the WebKit project.
  *
  * Copyright (C) 2006 Apple Computer, Inc.
  * Copyright (C) 2006 Michael Emmel mike.emmel@gmail.com
  * Copyright (C) 2007 Holger Hans Peter Freyther
  * Copyright (C) 2007 Alp Toker <alp@atoker.com>
  * Copyright (C) 2008, 2009 Google, Inc.
  * All rights reserved.
  *
@@ skipping 48 matching lines @@
     virtual Color platformActiveSelectionForegroundColor() const override;
     virtual Color platformInactiveSelectionForegroundColor() const override;
     virtual Color platformFocusRingColor() const override;
 
     // To change the blink interval, override caretBlinkIntervalInternal instead of this one so that we may share layout test code an intercepts.
     virtual double caretBlinkInterval() const override;
 
     // System fonts.
     virtual void systemFont(CSSValueID systemFontID, FontStyle&, FontWeight&, float& fontSize, AtomicString& fontFamily) const;
 
-    virtual int minimumMenuListSize(RenderStyle*) const override;
+    virtual int minimumMenuListSize(const RenderStyle*) const override;
 
     virtual void setCheckboxSize(RenderStyle*) const override;
 
     virtual void setRadioSize(RenderStyle*) const override;
 
     virtual void adjustButtonStyle(RenderStyle*, Element*) const override;
 
     virtual bool paintTextArea(RenderObject*, const PaintInfo&, const IntRect&) override;
 
     virtual void adjustSearchFieldStyle(RenderStyle*, Element*) const override;
@@ skipping 31 matching lines @@
     // codepath. We never go down both. And in both cases, they render the
     // entire menulist.
     virtual void adjustMenuListStyle(RenderStyle*, Element*) const override;
     virtual void adjustMenuListButtonStyle(RenderStyle*, Element*) const override;
     virtual bool paintMenuListButton(RenderObject*, const PaintInfo&, const IntRect&) override;
 
     virtual double animationRepeatIntervalForProgressBar(RenderProgress*) const override;
     virtual double animationDurationForProgressBar(RenderProgress*) const override;
 
     // These methods define the padding for the MenuList's inner block.
-    virtual int popupInternalPaddingLeft(RenderStyle*) const override;
-    virtual int popupInternalPaddingRight(RenderStyle*) const override;
-    virtual int popupInternalPaddingTop(RenderStyle*) const override;
-    virtual int popupInternalPaddingBottom(RenderStyle*) const override;
+    virtual int popupInternalPaddingLeft(const RenderStyle*) const override;
+    virtual int popupInternalPaddingRight(const RenderStyle*) const override;
+    virtual int popupInternalPaddingTop(const RenderStyle*) const override;
+    virtual int popupInternalPaddingBottom(const RenderStyle*) const override;
 
     // Provide a way to pass the default font size from the Settings object
     // to the render theme. FIXME: http://b/1129186 A cleaner way would be
     // to remove the default font size from this object and have callers
     // that need the value to get it directly from the appropriate Settings
     // object.
     static void setDefaultFontSize(int);
 
 protected:
     virtual double caretBlinkIntervalInternal() const;
@@ skipping 10 matching lines @@
         ~DirectionFlippingScope();
 
     private:
         bool m_needsFlipping;
         const PaintInfo& m_paintInfo;
     };
 
 private:
     virtual bool shouldShowPlaceholderWhenFocused() const override;
 
-    int menuListInternalPadding(RenderStyle*, int paddingType) const;
+    int menuListInternalPadding(const RenderStyle*, int paddingType) const;
     bool paintMediaButtonInternal(GraphicsContext*, const IntRect&, Image*);
     IntRect convertToPaintingRect(RenderObject* inputRenderer, const RenderObject* partRenderer, LayoutRect partRect, const IntRect& localOffset) const;
 
     static const RGBA32 defaultTapHighlightColor = 0x2e000000; // 18% black.
 };
 
 } // namespace blink
 
 #endif // LayoutThemeChromiumSkia_h