Rendering API cleanup

Source/core/rendering/RenderLayer.cpp

Index: Source/core/rendering/RenderLayer.cpp
diff --git a/Source/core/rendering/RenderLayer.cpp b/Source/core/rendering/RenderLayer.cpp
index 59741e86d6ce412df91f3a0ee16feb1f80ded73b..361ca450cecd1294e51b843704ac0efce7e6ac11 100644
--- a/Source/core/rendering/RenderLayer.cpp
+++ b/Source/core/rendering/RenderLayer.cpp
@@ -396,18 +396,6 @@ TransformationMatrix RenderLayer::renderableTransform(PaintBehavior paintBehavio
     return *m_transform;
 }
 
-RenderLayer* RenderLayer::enclosingOverflowClipLayer(IncludeSelfOrNot includeSelf) const
-{
-    const RenderLayer* layer = (includeSelf == IncludeSelf) ? this : parent();
-    while (layer) {
-        if (layer->renderer()->hasOverflowClip())
-            return const_cast<RenderLayer*>(layer);
-
-        layer = layer->parent();
-    }
-    return 0;
-}
-
 static bool checkContainingBlockChainForPagination(RenderLayerModelObject* renderer, RenderBox* ancestorColumnsRenderer)
 {
     RenderView* view = renderer->view();
@@ -3440,22 +3428,6 @@ bool RenderLayer::hasVisibleBoxDecorations() const
     return hasBoxDecorationsOrBackground() || hasOverflowControls();
 }
 
-bool RenderLayer::isVisuallyNonEmpty() const
-{
-    ASSERT(!m_visibleDescendantStatusDirty);
-
-    if (hasVisibleContent() && hasNonEmptyChildRenderers())
-        return true;
-
-    if (renderer()->isReplaced() || renderer()->hasMask())
-        return true;
-
-    if (hasVisibleBoxDecorations())
-        return true;
-
-    return false;
-}
-
 void RenderLayer::updateFilters(const RenderStyle* oldStyle, const RenderStyle* newStyle)
 {
     if (!newStyle->hasFilter() && (!oldStyle || !oldStyle->hasFilter()))