Remove FrameView::containsScrollableArea

Source/core/rendering/RenderLayerScrollableArea.cpp

Index: Source/core/rendering/RenderLayerScrollableArea.cpp
diff --git a/Source/core/rendering/RenderLayerScrollableArea.cpp b/Source/core/rendering/RenderLayerScrollableArea.cpp
index 591abf0e3a4161669ef8099d60cfe71f1d77f50e..0057d937b66bba370a652dfe23fd90d6649ead53 100644
--- a/Source/core/rendering/RenderLayerScrollableArea.cpp
+++ b/Source/core/rendering/RenderLayerScrollableArea.cpp
@@ -76,6 +76,7 @@ const int ResizerControlExpandRatioForTouch = 2;
 RenderLayerScrollableArea::RenderLayerScrollableArea(RenderBox* box)
     : m_box(box)
     , m_inResizeMode(false)
+    , m_scrollsOverflow(false)
     , m_scrollDimensionsDirty(true)
     , m_inOverflowRelayout(false)
     , m_needsCompositedScrolling(false)
@@ -967,14 +968,6 @@ void RenderLayerScrollableArea::positionOverflowControls(const IntSize& offsetFr
         m_box->compositedLayerMapping()->positionOverflowControlsLayers(offsetFromRoot);
 }
 
-bool RenderLayerScrollableArea::scrollsOverflow() const
-{
-    if (FrameView* frameView = m_box->view()->frameView())
-        return frameView->containsScrollableArea(this);
-
-    return false;
-}
-
 void RenderLayerScrollableArea::updateScrollCornerStyle()
 {
     if (!m_scrollCorner && !hasScrollbar())
@@ -1415,9 +1408,10 @@ void RenderLayerScrollableArea::updateScrollableAreaSet(bool hasOverflow)
     if (HTMLFrameOwnerElement* owner = frame->ownerElement())
         isVisibleToHitTest &= owner->renderer() && owner->renderer()->visibleToHitTesting();
 
-    bool requiresScrollableArea = hasOverflow && isVisibleToHitTest;
+    m_scrollsOverflow = hasOverflow && isVisibleToHitTest;
+
     bool updatedScrollableAreaSet = false;
-    if (requiresScrollableArea) {
+    if (m_scrollsOverflow) {
         if (frameView->addScrollableArea(this))
             updatedScrollableAreaSet = true;
     } else {
@@ -1432,7 +1426,7 @@ void RenderLayerScrollableArea::updateScrollableAreaSet(bool hasOverflow)
         RenderLayerCompositor* compositor = m_box->view()->compositor();
         if (compositor->acceleratedCompositingForOverflowScrollEnabled())
             layer()->didUpdateNeedsCompositedScrolling();
-        else if (requiresScrollableArea)
+        else if (m_scrollsOverflow)
             compositor->setNeedsUpdateCompositingRequirementsState();
         else
             setNeedsCompositedScrolling(false);