Remove FrameView::containsScrollableArea

Source/core/rendering/compositing/CompositingReasonFinder.cpp

 // Copyright 2014 The Chromium Authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 #include "config.h"
 #include "core/rendering/compositing/CompositingReasonFinder.h"
 
 #include "CSSPropertyNames.h"
 #include "HTMLNames.h"
 #include "core/frame/FrameView.h"
@@ skipping 276 matching lines @@
     bool hasScrollableAncestor = false;
 
     // The FrameView has the scrollbars associated with the top level viewport, so we have to
     // check the FrameView in addition to the hierarchy of ancestors.
     FrameView* frameView = m_renderView.frameView();
     if (frameView && frameView->isScrollable())
         hasScrollableAncestor = true;
 
     RenderLayer* ancestor = layer->parent();
     while (ancestor && !hasScrollableAncestor) {
-        if (frameView->containsScrollableArea(ancestor->scrollableArea()))
+        if (ancestor->scrollsOverflow())
             hasScrollableAncestor = true;
         if (ancestor->renderer() == &m_renderView)
             break;
         ancestor = ancestor->parent();
     }
 
     if (!hasScrollableAncestor) {
         if (viewportConstrainedNotCompositedReason)
             *viewportConstrainedNotCompositedReason = RenderLayer::NotCompositedForUnscrollableAncestors;
         return false;
@@ skipping 22 matching lines @@
                 *needToRecomputeCompositingRequirements = true;
             }
             return false;
         }
     }
 
     return true;
 }
 
 }