Delete an assortment of unneeded paint invalidation code.

sky/engine/core/rendering/RenderObject.cpp

Index: sky/engine/core/rendering/RenderObject.cpp
diff --git a/sky/engine/core/rendering/RenderObject.cpp b/sky/engine/core/rendering/RenderObject.cpp
index dbcd1c919de150847b433c0a2820f9b70751fbac..65e3ec3a7174e083a03ce1b8a58c93530db08d2a 100644
--- a/sky/engine/core/rendering/RenderObject.cpp
+++ b/sky/engine/core/rendering/RenderObject.cpp
@@ -1230,11 +1230,6 @@ LayoutRect RenderObject::boundsRectForPaintInvalidation(const RenderLayerModelOb
     return RenderLayer::computePaintInvalidationRect(this, paintInvalidationContainer->layer(), paintInvalidationState);
 }
 
-// FIXME(sky): Remove
-void RenderObject::invalidatePaintRectangle(const LayoutRect& r) const
-{
-}
-
 IntRect RenderObject::pixelSnappedAbsoluteClippedOverflowRect() const
 {
     return pixelSnappedIntRect(absoluteClippedOverflowRect());
@@ -1255,11 +1250,6 @@ void RenderObject::invalidateTreeIfNeeded(const PaintInvalidationState& paintInv
     }
 }
 
-bool RenderObject::checkForPaintInvalidation() const
-{
-    return !document().view()->needsFullPaintInvalidation() && everHadLayout();
-}
-
 LayoutRect RenderObject::rectWithOutlineForPaintInvalidation(const RenderLayerModelObject* paintInvalidationContainer, LayoutUnit outlineWidth, const PaintInvalidationState* paintInvalidationState) const
 {
     LayoutRect r(clippedOverflowRectForPaintInvalidation(paintInvalidationContainer, paintInvalidationState));