Convert LayoutObject renderer names.

Source/core/paint/ViewPainter.cpp

Index: Source/core/paint/ViewPainter.cpp
diff --git a/Source/core/paint/ViewPainter.cpp b/Source/core/paint/ViewPainter.cpp
index 0432bdede0d29f3cb4041389687ff523b227111c..6365dce2e4ba7fbaab5ceee7cc4fa97badc1ef04 100644
--- a/Source/core/paint/ViewPainter.cpp
+++ b/Source/core/paint/ViewPainter.cpp
@@ -49,8 +49,8 @@ static inline bool rendererObscuresBackground(LayoutBox* rootBox)
     if (rootBox->compositingState() == PaintsIntoOwnBacking)
         return false;
 
-    const LayoutObject* rootRenderer = rootBox->rendererForRootBackground();
-    if (rootRenderer->style()->backgroundClip() == TextFillBox)
+    const LayoutObject* rootLayoutObject = rootBox->layoutObjectForRootBackground();
+    if (rootLayoutObject->style()->backgroundClip() == TextFillBox)
         return false;
 
     return true;