Get rid of AXScrollView and AXScrollbar

third_party/WebKit/Source/core/dom/AXObjectCache.h

Index: third_party/WebKit/Source/core/dom/AXObjectCache.h
diff --git a/third_party/WebKit/Source/core/dom/AXObjectCache.h b/third_party/WebKit/Source/core/dom/AXObjectCache.h
index c7ffe9a1d4d89965d44e7d631c4da70bd2c07d0b..f6ea9cdb5afedc317a56f2fd0f2efd236071d9b1 100644
--- a/third_party/WebKit/Source/core/dom/AXObjectCache.h
+++ b/third_party/WebKit/Source/core/dom/AXObjectCache.h
@@ -40,7 +40,6 @@ class HTMLOptionElement;
 class HTMLSelectElement;
 class LayoutMenuList;
 class Page;
-class Widget;
 
 class CORE_EXPORT AXObjectCache : public GarbageCollectedFinalized<AXObjectCache> {
     WTF_MAKE_NONCOPYABLE(AXObjectCache);
@@ -98,7 +97,6 @@ public:
 
     virtual void remove(LayoutObject*) = 0;
     virtual void remove(Node*) = 0;
-    virtual void remove(Widget*) = 0;
     virtual void remove(AbstractInlineTextBox*) = 0;
 
     virtual const Element* rootAXEditableElement(const Node*) = 0;
@@ -130,7 +128,6 @@ public:
     virtual void handleScrollPositionChanged(LayoutObject*) = 0;
 
     // Called when scroll bars are added / removed (as the view resizes).

[je_julie, 2016/01/07 06:56:03]

nit, this comment seems to be added for handleScrollbarUpdate(FrameView*) API
and we can remove it as well.

-    virtual void handleScrollbarUpdate(FrameView*) = 0;
     virtual void handleLayoutComplete(LayoutObject*) = 0;
     virtual void handleScrolledToAnchor(const Node* anchorNode) = 0;