WIP: Skeleton for paint offset caching

Source/core/paint/SVGClipPainter.cpp

 // Copyright 2015 The Chromium Authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 #include "config.h"
 #include "core/paint/SVGClipPainter.h"
 
 #include "core/dom/ElementTraversal.h"
 #include "core/layout/svg/LayoutSVGResourceClipper.h"
 #include "core/layout/svg/SVGResources.h"
@@ skipping 113 matching lines @@
     }
 }
 
 void SVGClipPainter::drawClipMaskContent(GraphicsContext* context, const LayoutObject& layoutObject, const FloatRect& targetBoundingBox, const FloatRect& targetPaintInvalidationRect)
 {
     ASSERT(context);
 
     AffineTransform contentTransformation;
     RefPtr<const SkPicture> clipContentPicture = m_clip.createContentPicture(contentTransformation, targetBoundingBox, context);
 
-    if (LayoutObjectDrawingRecorder::useCachedDrawingIfPossible(*context, layoutObject, DisplayItem::SVGClip))
+    if (LayoutObjectDrawingRecorder::useCachedDrawingIfPossible(*context, layoutObject, DisplayItem::SVGClip, LayoutPoint()))
         return;
 
-    LayoutObjectDrawingRecorder drawingRecorder(*context, layoutObject, DisplayItem::SVGClip, targetPaintInvalidationRect);
+    LayoutObjectDrawingRecorder drawingRecorder(*context, layoutObject, DisplayItem::SVGClip, targetPaintInvalidationRect, LayoutPoint());
     context->save();
     context->concatCTM(contentTransformation);
     context->drawPicture(clipContentPicture.get());
     context->restore();
 }
 
 }