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..7bd6d8ff08e2649e4d8bb2650523ffd244d95a83 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();
@@ -1453,13 +1441,6 @@ void RenderLayer::convertToLayerCoords(const RenderLayer* ancestorLayer, LayoutP
         currLayer = accumulateOffsetTowardsAncestor(currLayer, ancestorLayer, location);
 }
 
-void RenderLayer::convertToLayerCoords(const RenderLayer* ancestorLayer, LayoutRect& rect) const

[mstensho (USE GERRIT), 2014/10/02 10:51:45]

Can we keep this? https://codereview.chromium.org/612323011/patch/1/10003 wants
to use it.

-{
-    LayoutPoint delta;
-    convertToLayerCoords(ancestorLayer, delta);
-    rect.move(-delta.x(), -delta.y());
-}
-
 void RenderLayer::didUpdateNeedsCompositedScrolling()
 {
     updateSelfPaintingLayer();
@@ -3440,22 +3421,6 @@ 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()))