[Layout API] Use ownerLayoutItem() in ObjectPaintInvalidator

third_party/WebKit/Source/core/paint/ObjectPaintInvalidator.cpp

 // Copyright 2016 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 "core/paint/ObjectPaintInvalidator.h"
 
 #include "core/frame/FrameView.h"
 #include "core/frame/LocalFrame.h"
 #include "core/layout/LayoutBlockFlow.h"
 #include "core/layout/compositing/CompositedLayerMapping.h"
@@ skipping 181 matching lines @@
     return value;
 }
 
 static void invalidatePaintRectangleOnWindow(const LayoutBoxModelObject& paintInvalidationContainer, const IntRect& dirtyRect)
 {
     FrameView* frameView = paintInvalidationContainer.frameView();
     DCHECK(paintInvalidationContainer.isLayoutView() && paintInvalidationContainer.layer()->compositingState() == NotComposited);
     if (!frameView || paintInvalidationContainer.document().printing())
         return;
 
-    DCHECK(!frameView->frame().ownerLayoutObject());
+    DCHECK(frameView->frame().ownerLayoutItem().isNull());
 
     IntRect paintRect = dirtyRect;
     paintRect.intersect(frameView->visibleContentRect());
     if (paintRect.isEmpty())
         return;
 
     if (HostWindow* window = frameView->getHostWindow())
         window->invalidateRect(frameView->contentsToRootFrame(paintRect));
 }
 
@@ skipping 254 matching lines @@
     m_object.invalidateDisplayItemClients(reason);
     return reason;
 }
 
 DisablePaintInvalidationStateAsserts::DisablePaintInvalidationStateAsserts()
     : m_disabler(&gDisablePaintInvalidationStateAsserts, true)
 {
 }
 
 } // namespace blink