Pass RenderStyle / RenderObject by reference in more places

Source/core/rendering/style/RenderStyle.h

Index: Source/core/rendering/style/RenderStyle.h
diff --git a/Source/core/rendering/style/RenderStyle.h b/Source/core/rendering/style/RenderStyle.h
index 127a7285248975f8933344409beb9d8bc4bb3701..d73b89dd2729bb19383ed4a17bf05d1b959f47b1 100644
--- a/Source/core/rendering/style/RenderStyle.h
+++ b/Source/core/rendering/style/RenderStyle.h
@@ -1786,14 +1786,14 @@ inline int adjustForAbsoluteZoom(int value, const RenderStyle* style)
     return roundForImpreciseConversion<int>(value / zoomFactor);
 }
 
-inline float adjustFloatForAbsoluteZoom(float value, const RenderStyle* style)
+inline float adjustFloatForAbsoluteZoom(float value, const RenderStyle& style)
 {
-    return value / style->effectiveZoom();
+    return value / style.effectiveZoom();
 }
 
-inline LayoutUnit adjustLayoutUnitForAbsoluteZoom(LayoutUnit value, const RenderStyle* style)
+inline LayoutUnit adjustLayoutUnitForAbsoluteZoom(LayoutUnit value, const RenderStyle& style)
 {
-    return value / style->effectiveZoom();
+    return value / style.effectiveZoom();
 }
 
 inline bool RenderStyle::setZoom(float f)