Delete a bunch of noop paint invalidation code.

sky/engine/core/frame/FrameView.cpp

 /*
  * Copyright (C) 1998, 1999 Torben Weis <weis@kde.org>
  *                     1999 Lars Knoll <knoll@kde.org>
  *                     1999 Antti Koivisto <koivisto@kde.org>
  *                     2000 Dirk Mueller <mueller@kde.org>
  * Copyright (C) 2004, 2005, 2006, 2007, 2008 Apple Inc. All rights reserved.
  *           (C) 2006 Graham Dennis (graham.dennis@gmail.com)
  *           (C) 2006 Alexey Proskuryakov (ap@nypop.com)
  * Copyright (C) 2009 Google Inc. All rights reserved.
  *
@@ skipping 128 matching lines @@
 void FrameView::clear()
 {
     reset();
 }
 
 bool FrameView::didFirstLayout() const
 {
     return !m_firstLayout;
 }
 
-void FrameView::invalidateRect(const IntRect& rect)
-{
-    // FIXME(sky): Parent is always null in sky?
-    if (!parent()) {
-        if (HostWindow* window = hostWindow())
-            window->invalidateContentsAndRootView(rect);
-    }
-}
-
 void FrameView::setFrameRect(const IntRect& newRect)
 {
     IntRect oldRect = frameRect();
     if (newRect == oldRect)
         return;
 
     Widget::setFrameRect(newRect);
 }
 
 Page* FrameView::page() const
@@ skipping 741 matching lines @@
     totalObjects = 0;
 
     for (RenderObject* o = root; o; o = o->nextInPreOrder(root)) {
         ++totalObjects;
         if (o->needsLayout())
             ++needsLayoutObjects;
     }
 }
 
 } // namespace blink