Removed ScrollingCoordinator and a bunch of composited scrolling'

sky/engine/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 33 matching lines @@
 #include "config.h"
 #include "core/rendering/RenderLayer.h"
 
 #include "core/CSSPropertyNames.h"
 #include "core/dom/Document.h"
 #include "core/dom/shadow/ShadowRoot.h"
 #include "core/frame/FrameView.h"
 #include "core/frame/LocalFrame.h"
 #include "core/frame/Settings.h"
 #include "core/page/Page.h"
-#include "core/page/scrolling/ScrollingCoordinator.h"
 #include "core/rendering/FilterEffectRenderer.h"
 #include "core/rendering/HitTestRequest.h"
 #include "core/rendering/HitTestResult.h"
 #include "core/rendering/HitTestingTransformState.h"
 #include "core/rendering/RenderGeometryMap.h"
 #include "core/rendering/RenderInline.h"
 #include "core/rendering/RenderTreeAsText.h"
 #include "core/rendering/RenderView.h"
 #include "core/rendering/compositing/CompositedLayerMapping.h"
 #include "core/rendering/compositing/RenderLayerCompositor.h"
@@ skipping 55 matching lines @@
 {
     updateStackingNode();
 
     m_isSelfPaintingLayer = shouldBeSelfPaintingLayer();
 
     updateScrollableArea();
 }
 
 RenderLayer::~RenderLayer()
 {
-    if (renderer()->frame() && renderer()->frame()->page()) {
-        if (ScrollingCoordinator* scrollingCoordinator = renderer()->frame()->page()->scrollingCoordinator())
-            scrollingCoordinator->willDestroyRenderLayer(this);
-    }
-
     removeFilterInfoIfNeeded();
 
     if (groupedMapping()) {
         DisableCompositingQueryAsserts disabler;
         groupedMapping()->removeRenderLayerFromSquashingGraphicsLayer(this);
         setGroupedMapping(0);
     }
 
     // Child layers will be deleted by their corresponding render objects, so
     // we don't need to delete them ourselves.
@@ skipping 2182 matching lines @@
     switch (compositingState()) {
     case NotComposited:
         return 0;
     case PaintsIntoGroupedBacking:
         return groupedMapping()->squashingLayer();
     default:
         return compositedLayerMapping()->mainGraphicsLayer();
     }
 }
 
-GraphicsLayer* RenderLayer::graphicsLayerBackingForScrolling() const
-{
-    switch (compositingState()) {
-    case NotComposited:
-        return 0;
-    case PaintsIntoGroupedBacking:
-        return groupedMapping()->squashingLayer();
-    default:
-        return compositedLayerMapping()->scrollingContentsLayer() ? compositedLayerMapping()->scrollingContentsLayer() : compositedLayerMapping()->mainGraphicsLayer();
-    }
-}
-
 CompositedLayerMapping* RenderLayer::ensureCompositedLayerMapping()
 {
     if (!m_compositedLayerMapping) {
         m_compositedLayerMapping = adoptPtr(new CompositedLayerMapping(*this));
         m_compositedLayerMapping->setNeedsGraphicsLayerUpdate(GraphicsLayerUpdateSubtree);
 
         updateOrRemoveFilterEffectRenderer();
     }
     return m_compositedLayerMapping.get();
 }
@@ skipping 343 matching lines @@
     }
 }
 
 void showLayerTree(const blink::RenderObject* renderer)
 {
     if (!renderer)
         return;
     showLayerTree(renderer->enclosingLayer());
 }
 #endif