Rename rendering/RenderScrollbar* to layout/LayoutScrollbar*

Source/core/css/SelectorChecker.h

Index: Source/core/css/SelectorChecker.h
diff --git a/Source/core/css/SelectorChecker.h b/Source/core/css/SelectorChecker.h
index e8d4ca8c768c4efa74029992a788bb6291418e52..fde1c189e7f2319b31f63a745b9a422f089a1b78 100644
--- a/Source/core/css/SelectorChecker.h
+++ b/Source/core/css/SelectorChecker.h
@@ -37,7 +37,7 @@ namespace blink {
 class CSSSelector;
 class ContainerNode;
 class Element;
-class RenderScrollbar;
+class LayoutScrollbar;
 class LayoutStyle;
 
 class SelectorChecker {
@@ -78,7 +78,7 @@ public:
         VisitedMatchType visitedMatchType;
         PseudoId pseudoId;
         LayoutStyle* elementStyle;
-        RawPtrWillBeMember<RenderScrollbar> scrollbar;
+        RawPtrWillBeMember<LayoutScrollbar> scrollbar;
         ScrollbarPart scrollbarPart;
         unsigned isSubSelector : 1;
         unsigned hasScrollbarPseudo : 1;