OverscrollGlow for mainThread-{BLINK CHANGES}

Source/platform/scroll/ScrollableArea.cpp

Index: Source/platform/scroll/ScrollableArea.cpp
diff --git a/Source/platform/scroll/ScrollableArea.cpp b/Source/platform/scroll/ScrollableArea.cpp
index 55dd4ae3522c2c79e10c19de48ef3112a0a4761d..8f7288730fe29d2bd59556db4f26cfb332857c9f 100644
--- a/Source/platform/scroll/ScrollableArea.cpp
+++ b/Source/platform/scroll/ScrollableArea.cpp
@@ -122,7 +122,7 @@ GraphicsLayer* ScrollableArea::layerForContainer() const
     return layerForScrolling() ? layerForScrolling()->parent() : 0;
 }
 
-bool ScrollableArea::scroll(ScrollDirection direction, ScrollGranularity granularity, float delta)
+ScrollResultOneDimensional ScrollableArea::scroll(ScrollDirection direction, ScrollGranularity granularity, float delta)
 {
     ASSERT(!isLogical(direction));
 
@@ -133,7 +133,7 @@ bool ScrollableArea::scroll(ScrollDirection direction, ScrollGranularity granula
         orientation = HorizontalScrollbar;
 
     if (!userInputScrollable(orientation))
-        return false;
+        return ScrollResultOneDimensional(false, delta);
 
     cancelProgrammaticScrollAnimation();
 
@@ -157,7 +157,7 @@ bool ScrollableArea::scroll(ScrollDirection direction, ScrollGranularity granula
     if (direction == ScrollUp || direction == ScrollLeft)
         delta = -delta;
 
-    return scrollAnimator()->scroll(orientation, granularity, step, delta).didScroll;
+    return scrollAnimator()->scroll(orientation, granularity, step, delta);
 }
 
 void ScrollableArea::setScrollPosition(const DoublePoint& position, ScrollBehavior behavior)