Remove a bunch of dead code from RenderLayer

sky/engine/core/rendering/RenderObject.cpp

 /*
  * Copyright (C) 1999 Lars Knoll (knoll@kde.org)
  *           (C) 1999 Antti Koivisto (koivisto@kde.org)
  *           (C) 2000 Dirk Mueller (mueller@kde.org)
  *           (C) 2004 Allan Sandfeld Jensen (kde@carewolf.com)
  * Copyright (C) 2004, 2005, 2006, 2007, 2008, 2011 Apple Inc. All rights reserved.
  * Copyright (C) 2009 Google Inc. All rights reserved.
  * Copyright (C) 2009 Torch Mobile Inc. All rights reserved. (http://www.torchmobile.com/)
  *
  * This library is free software; you can redistribute it and/or
@@ skipping 1191 matching lines @@
 }
 
 void RenderObject::paint(PaintInfo&, const LayoutPoint&)
 {
 }
 
 const RenderLayerModelObject* RenderObject::containerForPaintInvalidation() const
 {
     if (!isRooted())
         return 0;
-
-    return adjustCompositedContainerForSpecialAncestors(enclosingCompositedContainer());
-}
-
-const RenderLayerModelObject* RenderObject::enclosingCompositedContainer() const
-{
-    RenderLayerModelObject* container = 0;
-    if (RenderLayer* compositingLayer = enclosingLayer()->enclosingLayerForPaintInvalidationCrossingFrameBoundaries())
-        container = compositingLayer->renderer();
-    return container;
+    // ??

[ojan, 2014/11/29 01:48:15]

Yup. This is right for now. All paint invalidation is WRT to the root now that
we don't have compositing. That'll probably change again when we fix painting
with iframes to work right. I think right now iframes will not paint correctly
between other elements (they'll always go on top?).

+    return view();
 }
 
 const RenderLayerModelObject* RenderObject::adjustCompositedContainerForSpecialAncestors(const RenderLayerModelObject* paintInvalidationContainer) const
 {
     if (paintInvalidationContainer)
         return paintInvalidationContainer;
-
-    RenderView* renderView = view();
-    return renderView;
-}
-
-bool RenderObject::isPaintInvalidationContainer() const
-{
-    return hasLayer() && toRenderLayerModelObject(this)->layer()->isPaintInvalidationContainer();
+    // ??

[ojan, 2014/11/29 01:48:15]

We can get rid of the concept now. We shouldn't have any special ancestors and
we don't have composited containers. I'd just make this a FIXME(sky).

+    return view();
 }
 
 template <typename T>
 void addJsonObjectForRect(TracedValue* value, const char* name, const T& rect)
 {
     value->beginDictionary(name);
     value->setDouble("x", rect.x());
     value->setDouble("y", rect.y());
     value->setDouble("width", rect.width());
     value->setDouble("height", rect.height());
@@ skipping 1343 matching lines @@
 {
     if (object1) {
         const blink::RenderObject* root = object1;
         while (root->parent())
             root = root->parent();
         root->showRenderTreeAndMark(object1, "*", object2, "-", 0);
     }
 }
 
 #endif