Revert of Fix shouldPaint issue when a composited floating iframe becomes non-self-painting

third_party/WebKit/Source/core/layout/compositing/CompositingInputsUpdater.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 "core/layout/compositing/CompositingInputsUpdater.h"
 
 #include "core/dom/Document.h"
 #include "core/frame/FrameHost.h"
 #include "core/frame/FrameView.h"
 #include "core/layout/LayoutBlock.h"
@@ skipping 229 matching lines @@
   if (layer->layoutObject()->hasClipPath())
     info.hasAncestorWithClipPath = true;
 
   for (PaintLayer* child = layer->firstChild(); child;
        child = child->nextSibling())
     updateRecursive(child, updateType, info);
 
   layer->didUpdateCompositingInputs();
 
   m_geometryMap.popMappingsToAncestor(layer->parent());
-
-  if (layer->selfPaintingStatusChanged()) {
-    layer->clearSelfPaintingStatusChanged();
-    // If the floating object becomes non-self-painting, so some ancestor should
-    // paint it; if it becomes self-painting, it should paint itself and no
-    // ancestor should paint it.
-    if (layer->layoutObject()->isFloating()) {
-      LayoutBlockFlow::updateAncestorShouldPaintFloatingObject(
-          *layer->layoutBox());
-    }
-  }
 }
 
 #if DCHECK_IS_ON()
 
 void CompositingInputsUpdater::assertNeedsCompositingInputsUpdateBitsCleared(
     PaintLayer* layer) {
   ASSERT(!layer->childNeedsCompositingInputsUpdate());
   ASSERT(!layer->needsCompositingInputsUpdate());
 
   for (PaintLayer* child = layer->firstChild(); child;
        child = child->nextSibling())
     assertNeedsCompositingInputsUpdateBitsCleared(child);
 }
 
 #endif
 
 }  // namespace blink