Remove GraphicsLayer::didScroll and directly call ScrollableArea::didScroll

third_party/WebKit/Source/core/page/scrolling/ScrollingCoordinator.cpp

Index: third_party/WebKit/Source/core/page/scrolling/ScrollingCoordinator.cpp
diff --git a/third_party/WebKit/Source/core/page/scrolling/ScrollingCoordinator.cpp b/third_party/WebKit/Source/core/page/scrolling/ScrollingCoordinator.cpp
index 42d8e24513932932a9e0caf7eeb9b7c53c743a6b..51b10e24748ddddfb51758cb39ff925bfb6013e2 100644
--- a/third_party/WebKit/Source/core/page/scrolling/ScrollingCoordinator.cpp
+++ b/third_party/WebKit/Source/core/page/scrolling/ScrollingCoordinator.cpp
@@ -487,9 +487,9 @@ bool ScrollingCoordinator::scrollableAreaScrollLayerDidChange(
   WebLayer* containerLayer = toWebLayer(scrollableArea->layerForContainer());
   if (webLayer) {
     webLayer->setScrollClipLayer(containerLayer);
-    DoublePoint scrollPosition(FloatPoint(scrollableArea->scrollOrigin()) +
-                               scrollableArea->getScrollOffset());
-    webLayer->setScrollPositionDouble(scrollPosition);
+    FloatPoint scrollPosition(scrollableArea->scrollOrigin() +
+                              scrollableArea->getScrollOffset());
+    webLayer->setScrollPosition(scrollPosition);
 
     webLayer->setBounds(scrollableArea->contentsSize());
     bool canScrollX = scrollableArea->userInputScrollable(HorizontalScrollbar);