Simplify RenderLayer::setParent

Source/core/rendering/RenderLayer.cpp

 /*
  * Copyright (C) 2006, 2007, 2008, 2009, 2010, 2011, 2012 Apple Inc. All rights reserved.
  *
  * Portions are Copyright (C) 1998 Netscape Communications Corporation.
  *
  * Other contributors:
  *   Robert O'Callahan <roc+@cs.cmu.edu>
  *   David Baron <dbaron@fas.harvard.edu>
  *   Christian Biesinger <cbiesinger@web.de>
  *   Randall Jesup <rjesup@wgate.com>
@@ skipping 3596 matching lines @@
         childLocalRect.moveBy(-childOffset);
 
         if (childLayer->backgroundIsKnownToBeOpaqueInRect(childLocalRect))
             return true;
     }
     return false;
 }
 
 void RenderLayer::setParent(RenderLayer* parent)
 {
-    if (parent == m_parent)
-        return;
-
-    if (m_parent && !renderer()->documentBeingDestroyed())
-        compositor()->layerWillBeRemoved(m_parent, this);
-
     m_parent = parent;

[esprehn, 2014/05/01 21:50:41]

This should be inline now. :)

-
-    if (m_parent && !renderer()->documentBeingDestroyed())
-        compositor()->layerWasAdded(m_parent, this);
 }
 
 bool RenderLayer::shouldBeSelfPaintingLayer() const
 {
     return m_layerType == NormalLayer
         || (m_scrollableArea && m_scrollableArea->hasOverlayScrollbars())
         || needsCompositedScrolling();
 }
 
 void RenderLayer::updateSelfPaintingLayer()
@@ skipping 387 matching lines @@
     }
 }
 
 void showLayerTree(const WebCore::RenderObject* renderer)
 {
     if (!renderer)
         return;
     showLayerTree(renderer->enclosingLayer());
 }
 #endif