Remove unneeded Convert* methods and move many from FrameViewBase to FrameView

third_party/WebKit/Source/platform/scroll/ScrollableArea.h

Index: third_party/WebKit/Source/platform/scroll/ScrollableArea.h
diff --git a/third_party/WebKit/Source/platform/scroll/ScrollableArea.h b/third_party/WebKit/Source/platform/scroll/ScrollableArea.h
index 03ba7c48dabf4fe8e069a4bbea0e6d2149630b58..e1d50355dfd080719ee20fac28378d33df0d6723 100644
--- a/third_party/WebKit/Source/platform/scroll/ScrollableArea.h
+++ b/third_party/WebKit/Source/platform/scroll/ScrollableArea.h
@@ -178,34 +178,11 @@ class PLATFORM_EXPORT ScrollableArea : public GarbageCollectedMixin,
   void SetScrollCornerNeedsPaintInvalidation();
   virtual void GetTickmarks(Vector<IntRect>&) const {}
 
-  // Convert points and rects between the scrollbar and its containing
-  // FrameViewBase. The client needs to implement these in order to be aware of
-  // layout effects like CSS transforms.
-  virtual IntRect ConvertFromScrollbarToContainingFrameViewBase(
-      const Scrollbar& scrollbar,
-      const IntRect& scrollbar_rect) const {
-    return scrollbar.FrameViewBase::ConvertToContainingFrameViewBase(
-        scrollbar_rect);
-  }
-  virtual IntRect ConvertFromContainingFrameViewBaseToScrollbar(
-      const Scrollbar& scrollbar,
-      const IntRect& parent_rect) const {
-    return scrollbar.FrameViewBase::ConvertFromContainingFrameViewBase(
-        parent_rect);
-  }
-  virtual IntPoint ConvertFromScrollbarToContainingFrameViewBase(
-      const Scrollbar& scrollbar,
-      const IntPoint& scrollbar_point) const {
-    return scrollbar.FrameViewBase::ConvertToContainingFrameViewBase(
-        scrollbar_point);
-  }
   virtual IntPoint ConvertFromContainingFrameViewBaseToScrollbar(
       const Scrollbar& scrollbar,
       const IntPoint& parent_point) const {
-    return scrollbar.FrameViewBase::ConvertFromContainingFrameViewBase(
-        parent_point);
+    return parent_point;
   }
-
   virtual Scrollbar* HorizontalScrollbar() const { return nullptr; }
   virtual Scrollbar* VerticalScrollbar() const { return nullptr; }