Delete blink code for scroll-blocks-on

Source/core/layout/compositing/CompositedDeprecatedPaintLayerMapping.cpp

Index: Source/core/layout/compositing/CompositedDeprecatedPaintLayerMapping.cpp
diff --git a/Source/core/layout/compositing/CompositedDeprecatedPaintLayerMapping.cpp b/Source/core/layout/compositing/CompositedDeprecatedPaintLayerMapping.cpp
index a8fccf28f6ffad24795b1d4eeac79bdb78c961fb..d7d6ebae914de8e9701743992256e3902bdb81c1 100644
--- a/Source/core/layout/compositing/CompositedDeprecatedPaintLayerMapping.cpp
+++ b/Source/core/layout/compositing/CompositedDeprecatedPaintLayerMapping.cpp
@@ -232,8 +232,6 @@ void CompositedDeprecatedPaintLayerMapping::createPrimaryGraphicsLayer()
         updateLayerBlendMode(layoutObject()->styleRef());
         updateIsRootForIsolatedGroup();
     }
-
-    updateScrollBlocksOn(layoutObject()->styleRef());
 }
 
 void CompositedDeprecatedPaintLayerMapping::destroyGraphicsLayers()
@@ -293,18 +291,6 @@ void CompositedDeprecatedPaintLayerMapping::updateIsRootForIsolatedGroup()
     m_graphicsLayer->setIsRootForIsolatedGroup(isolate);
 }
 
-void CompositedDeprecatedPaintLayerMapping::updateScrollBlocksOn(const ComputedStyle& style)
-{
-    // Note that blink determines the default scroll blocking policy, even
-    // when the scroll-blocks-on CSS feature isn't enabled.
-    WebScrollBlocksOn blockingMode = WebScrollBlocksOnStartTouch | WebScrollBlocksOnWheelEvent;
-
-    if (RuntimeEnabledFeatures::cssScrollBlocksOnEnabled())
-        blockingMode = style.scrollBlocksOn();
-
-    m_graphicsLayer->setScrollBlocksOn(blockingMode);
-}
-
 void CompositedDeprecatedPaintLayerMapping::updateContentsOpaque()
 {
     ASSERT(m_isMainFrameLayoutViewLayer || !m_backgroundLayer);
@@ -735,8 +721,6 @@ void CompositedDeprecatedPaintLayerMapping::updateGraphicsLayerGeometry(const De
     updateScrollParent(scrollParent());
     registerScrollingLayers();
 
-    updateScrollBlocksOn(layoutObject()->styleRef());
-
     updateCompositingReasons();
 }