Convert LayoutObject renderer names.

Source/core/paint/BoxPainter.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/paint/BoxPainter.h"
 
 #include "core/HTMLNames.h"
 #include "core/frame/Settings.h"
 #include "core/html/HTMLFrameOwnerElement.h"
@@ skipping 146 matching lines @@
     if (m_layoutBox.boxDecorationBackgroundIsKnownToBeObscured())
         return;
     paintFillLayers(paintInfo, backgroundColor, m_layoutBox.style()->backgroundLayers(), paintRect, bleedAvoidance);
 }
 
 void BoxPainter::paintRootBoxFillLayers(const PaintInfo& paintInfo)
 {
     if (paintInfo.skipRootBackground())
         return;
 
-    LayoutObject* rootBackgroundRenderer = m_layoutBox.rendererForRootBackground();
+    LayoutObject* rootBackgroundLayoutObject = m_layoutBox.layoutObjectForRootBackground();
 
-    const FillLayer& bgLayer = rootBackgroundRenderer->style()->backgroundLayers();
-    Color bgColor = rootBackgroundRenderer->resolveColor(CSSPropertyBackgroundColor);
+    const FillLayer& bgLayer = rootBackgroundLayoutObject->style()->backgroundLayers();
+    Color bgColor = rootBackgroundLayoutObject->resolveColor(CSSPropertyBackgroundColor);
 
-    paintFillLayers(paintInfo, bgColor, bgLayer, scrolledBackgroundRect(), BackgroundBleedNone, SkXfermode::kSrcOver_Mode, rootBackgroundRenderer);
+    paintFillLayers(paintInfo, bgColor, bgLayer, scrolledBackgroundRect(), BackgroundBleedNone, SkXfermode::kSrcOver_Mode, rootBackgroundLayoutObject);
 }
 
 void BoxPainter::paintFillLayers(const PaintInfo& paintInfo, const Color& c, const FillLayer& fillLayer, const LayoutRect& rect,
     BackgroundBleedAvoidance bleedAvoidance, SkXfermode::Mode op, LayoutObject* backgroundObject)
 {
     Vector<const FillLayer*, 8> layers;
     const FillLayer* curLayer = &fillLayer;
     bool shouldDrawBackgroundInSeparateBuffer = false;
     bool isBottomLayerOccluded = false;
     while (curLayer) {
@@ skipping 2089 matching lines @@
 
     FloatPoint secondQuad[4];
     secondQuad[0] = quad[0];
     secondQuad[1] = FloatPoint(quad[0].x() - r1 * cx, quad[0].y() - r1 * cy);
     secondQuad[2] = quad[2];
     secondQuad[3] = quad[3];
     graphicsContext->clipPolygon(4, secondQuad, !secondEdgeMatches);
 }
 
 } // namespace blink