OverscrollGlow for mainThread-{BLINK CHANGES}

Source/core/layout/LayoutBox.cpp

Index: Source/core/layout/LayoutBox.cpp
diff --git a/Source/core/layout/LayoutBox.cpp b/Source/core/layout/LayoutBox.cpp
index 3e77013a1c7f5084e26fec352ff37c6c4b811b68..f95345437b2e1a872e59b629dbaff0e4767926d0 100644
--- a/Source/core/layout/LayoutBox.cpp
+++ b/Source/core/layout/LayoutBox.cpp
@@ -735,7 +735,7 @@ int LayoutBox::intrinsicScrollbarLogicalWidth() const
     return 0;
 }
 
-bool LayoutBox::scroll(ScrollDirection direction, ScrollGranularity granularity, float delta)
+ScrollResultOneDimensional LayoutBox::scroll(ScrollDirection direction, ScrollGranularity granularity, float delta)
 {
     // Presumably the same issue as in setScrollTop. See crbug.com/343132.
     DisableCompositingQueryAsserts disabler;
@@ -744,7 +744,7 @@ bool LayoutBox::scroll(ScrollDirection direction, ScrollGranularity granularity,
     ASSERT(!isLogical(direction));
 
     if (!layer() || !layer()->scrollableArea())
-        return false;
+        return ScrollResultOneDimensional(false, delta);
 
     return layer()->scrollableArea()->scroll(direction, granularity, delta);
 }