Don't call LayoutPart::widgetPositionsUpdated unnecessarily.

third_party/WebKit/Source/core/paint/PaintLayerScrollableArea.cpp

Index: third_party/WebKit/Source/core/paint/PaintLayerScrollableArea.cpp
diff --git a/third_party/WebKit/Source/core/paint/PaintLayerScrollableArea.cpp b/third_party/WebKit/Source/core/paint/PaintLayerScrollableArea.cpp
index ee07a739352152000290662f0b1ffdc7e463aa1b..a3eb184c7f0c8240908ccdae9cd7d2b8e9bdd240 100644
--- a/third_party/WebKit/Source/core/paint/PaintLayerScrollableArea.cpp
+++ b/third_party/WebKit/Source/core/paint/PaintLayerScrollableArea.cpp
@@ -354,7 +354,7 @@ void PaintLayerScrollableArea::setScrollOffset(const DoublePoint& newScrollOffse
         layer()->updateLayerPositionsAfterOverflowScroll(scrollDelta);
         // Update regions, scrolling may change the clip of a particular region.
         frameView->updateDocumentAnnotatedRegions();
-        frameView->setNeedsUpdateWidgetPositions();
+        frameView->setNeedsUpdateWidgetGeometries();
         updateCompositingLayersAfterScroll();
     }