Cache display items from SVGImage contents.

third_party/WebKit/Source/core/svg/graphics/SVGImage.h

 /*
  * Copyright (C) 2006 Eric Seidel <eric@webkit.org>
  * Copyright (C) 2009 Apple Inc. All rights reserved.
  *
  * Redistribution and use in source and binary forms, with or without
  * modification, are permitted provided that the following conditions
  * are met:
  * 1. Redistributions of source code must retain the above copyright
  *    notice, this list of conditions and the following disclaimer.
  * 2. Redistributions in binary form must reproduce the above copyright
@@ skipping 20 matching lines @@
 #include "platform/graphics/Image.h"
 #include "platform/heap/Handle.h"
 #include "platform/weborigin/KURL.h"
 #include "third_party/skia/include/core/SkRefCnt.h"
 #include "wtf/Allocator.h"
 
 namespace blink {
 
 class Document;
 class Page;
+class PaintController;
 class LayoutReplaced;
 class SVGImageChromeClient;
 class SVGImageForContainer;
 
 // SVGImage does not use Skia to draw images (as BitmapImage does) but instead
 // handles drawing itself. Internally, SVGImage creates a detached & sandboxed
 // Page containing an SVGDocument and reuses the existing paint code in Blink to
 // draw the image. Because a single SVGImage can be referenced by multiple
 // containers (see: SVGImageForContainer.h), each call to SVGImage::draw() may
 // require (re-)laying out the inner SVGDocument.
@@ skipping 100 matching lines @@
                     RespectImageOrientationEnum,
                     ImageClampingMode,
                     const KURL&);
 
   void stopAnimation();
   void scheduleTimelineRewind();
   void flushPendingTimelineRewind();
 
   Persistent<SVGImageChromeClient> m_chromeClient;
   Persistent<Page> m_page;
+  std::unique_ptr<PaintController> m_paintController;
 
   // When an SVG image has no intrinsic size, the size depends on the default
   // object size, which in turn depends on the container. One SVGImage may
   // belong to multiple containers so the final image size can't be known in
   // SVGImage. SVGImageForContainer carries the final image size, also called
   // the "concrete object size". For more, see: SVGImageForContainer.h
   IntSize m_intrinsicSize;
   bool m_hasPendingTimelineRewind;
 };
 
@@ skipping 10 matching lines @@
 
   ~ImageObserverDisabler() { m_image->setImageObserverDisabled(false); }
 
  private:
   Image* m_image;
 };
 
 }  // namespace blink
 
 #endif  // SVGImage_h