Replace various ScrollableArea scroll methods with setScrollPosition

Source/platform/graphics/GraphicsLayer.cpp

Index: Source/platform/graphics/GraphicsLayer.cpp
diff --git a/Source/platform/graphics/GraphicsLayer.cpp b/Source/platform/graphics/GraphicsLayer.cpp
index 8d47b9406905e1fd2bbee892796194169828eb5b..aa293079f3c08e1eb19ef284a47bd1d93323ca6c 100644
--- a/Source/platform/graphics/GraphicsLayer.cpp
+++ b/Source/platform/graphics/GraphicsLayer.cpp
@@ -1151,9 +1151,10 @@ void GraphicsLayer::didScroll()
 {
     if (m_scrollableArea) {
         DoublePoint newPosition = m_scrollableArea->minimumScrollPosition() + toDoubleSize(m_layer->layer()->scrollPositionDouble());
-        bool cancelProgrammaticAnimations = false;
-        // FIXME: Remove the toFloatPoint(). crbug.com/414283.
-        m_scrollableArea->scrollToOffsetWithoutAnimation(toFloatPoint(newPosition), cancelProgrammaticAnimations);
+
+        // FrameView::setScrollPosition doesn't work for compositor commits (interacts poorly with programmatic scroll animations)
+        // so we need to use the ScrollableArea version. The FrameView method should go away soon anyway.
+        m_scrollableArea->ScrollableArea::setScrollPosition(newPosition, CompositorScroll);
     }
 }