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 d3aca75eafc13ea9a620acf49e44a27baefa275f..253382337cece27a87577734572d5dd8db71a177 100644
--- a/Source/core/layout/LayoutBox.cpp
+++ b/Source/core/layout/LayoutBox.cpp
@@ -709,7 +709,7 @@ 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;
@@ -718,7 +718,7 @@ bool LayoutBox::scroll(ScrollDirection direction, ScrollGranularity granularity,
     ASSERT(!isLogical(direction));
 
     if (!layer() || !layer()->scrollableArea())
-        return false;
+        return ScrollResultOneDimensional(false);
 
     return layer()->scrollableArea()->scroll(direction, granularity, delta);
 }