Remove a bunch of dead code from RenderLayer

sky/engine/core/rendering/RenderImage.cpp

 /*
  * Copyright (C) 1999 Lars Knoll (knoll@kde.org)
  *           (C) 1999 Antti Koivisto (koivisto@kde.org)
  *           (C) 2000 Dirk Mueller (mueller@kde.org)
  *           (C) 2006 Allan Sandfeld Jensen (kde@carewolf.com)
  *           (C) 2006 Samuel Weinig (sam.weinig@gmail.com)
  * Copyright (C) 2003, 2004, 2005, 2006, 2008, 2009, 2010, 2011 Apple Inc. All rights reserved.
  * Copyright (C) 2010 Google Inc. All rights reserved.
  * Copyright (C) Research In Motion Limited 2011-2012. All rights reserved.
  *
@@ skipping 165 matching lines @@
     } else {
         paintInvalidationRect = contentBoxRect();
     }
 
     {
         // FIXME: We should not be allowing paint invalidations during layout. crbug.com/339584
         AllowPaintInvalidationScope scoper(frameView());
         DisableCompositingQueryAsserts disabler;
         invalidatePaintRectangle(paintInvalidationRect);
     }
-
-    // Tell any potential compositing layers that the image needs updating.
-    contentChanged(ImageChanged);
 }
 
 void RenderImage::notifyFinished(Resource* newImage)
 {
     if (!m_imageResource)
         return;
 
     if (documentBeingDestroyed())
         return;
 
     invalidateBackgroundObscurationStatus();
-
-    if (newImage == m_imageResource->cachedImage()) {
-        // tell any potential compositing layers
-        // that the image is done and they can reference it directly.
-        contentChanged(ImageChanged);
-    }
 }
 
 void RenderImage::paintReplaced(PaintInfo& paintInfo, const LayoutPoint& paintOffset)
 {
     GraphicsContext* context = paintInfo.context;
 
     if (m_imageResource->hasImage() && contentWidth() > 0 && contentHeight() > 0) {
         LayoutRect contentRect = contentBoxRect();
         contentRect.moveBy(paintOffset);
         LayoutRect paintRect = replacedContentRect();
@@ skipping 135 matching lines @@
         return;
     }
 }
 
 bool RenderImage::needsPreferredWidthsRecalculation() const
 {
     return RenderReplaced::needsPreferredWidthsRecalculation();
 }
 
 } // namespace blink