OverscrollGlow for mainThread-{BLINK CHANGES}

Source/core/frame/RootFrameViewport.cpp

Index: Source/core/frame/RootFrameViewport.cpp
diff --git a/Source/core/frame/RootFrameViewport.cpp b/Source/core/frame/RootFrameViewport.cpp
index e2dea23147c9d10a6b7a77eb7369492215801485..f12e63f836f4acc000e5c4a6e87f358b3d6256fa 100644
--- a/Source/core/frame/RootFrameViewport.cpp
+++ b/Source/core/frame/RootFrameViewport.cpp
@@ -276,7 +276,7 @@ GraphicsLayer* RootFrameViewport::layerForVerticalScrollbar() const
     return layoutViewport().layerForVerticalScrollbar();
 }
 
-bool RootFrameViewport::scroll(ScrollDirectionPhysical direction, ScrollGranularity granularity, float delta)
+ScrollResultOneDimensional RootFrameViewport::scroll(ScrollDirectionPhysical direction, ScrollGranularity granularity, float delta)
 {
     updateScrollAnimator();
 
@@ -296,7 +296,7 @@ bool RootFrameViewport::scroll(ScrollDirectionPhysical direction, ScrollGranular
     if (layoutViewport().userInputScrollable(orientation))
         return layoutViewport().scroll(direction, granularity, delta);
 
-    return false;
+    return ScrollResultOneDimensional(false);
 }
 
 } // namespace blink