Revert "Re-land deferred compositing updates with fixed assumptions"

Source/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 2262 matching lines @@
     if (renderView)
         renderView->updateWidgetPositions();
 
     for (unsigned i = 0; i < maxUpdateWidgetsIterations; i++) {
         if (updateWidgets())
             break;
     }
 
     if (Page* page = m_frame->page()) {
         if (ScrollingCoordinator* scrollingCoordinator = page->scrollingCoordinator())
-            scrollingCoordinator->notifyLayoutUpdated();
+            scrollingCoordinator->frameViewLayoutUpdated(this);
     }
 
     scrollToAnchor();
 
     resumeOverflowEvents();
 
     sendResizeEventIfNeeded();
 }
 
 void FrameView::sendResizeEventIfNeeded()
@@ skipping 1170 matching lines @@
 void FrameView::setLayoutSizeInternal(const IntSize& size)
 {
     if (m_layoutSize == size)
         return;
 
     m_layoutSize = size;
     contentsResized();
 }
 
 } // namespace WebCore