[SVG] DisplayList-based patterns.

Source/platform/graphics/Pattern.h

 /*
  * Copyright (C) 2006, 2007, 2008 Apple Computer, Inc.  All rights reserved.
  * Copyright (C) 2008 Eric Seidel <eric@webkit.org>
  * Copyright (C) 2007-2008 Torch Mobile, Inc.
  * Copyright (C) 2013 Google, 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
@@ skipping 23 matching lines @@
 #include "platform/transforms/AffineTransform.h"
 
 #include "wtf/PassRefPtr.h"
 #include "wtf/RefCounted.h"
 #include "wtf/RefPtr.h"
 
 class SkShader;
 
 namespace blink {
 
+class DisplayList;
+
 class PLATFORM_EXPORT Pattern : public RefCounted<Pattern> {
 public:
     enum RepeatMode {
         RepeatModeX    = 1 << 0,
         RepeatModeY    = 1 << 1,
 
         RepeatModeNone = 0,
         RepeatModeXY   = RepeatModeX | RepeatModeY
     };
 
     static PassRefPtr<Pattern> createBitmapPattern(PassRefPtr<Image> tileImage,
         RepeatMode = RepeatModeXY);
+    static PassRefPtr<Pattern> createDisplayListPattern(PassRefPtr<DisplayList>,
+        RepeatMode = RepeatModeXY);
     virtual ~Pattern();
 
     SkShader* shader();
 
     void setPatternSpaceTransform(const AffineTransform& patternSpaceTransformation);
     const AffineTransform& patternSpaceTransform() const { return m_patternSpaceTransformation; }
 
     bool isRepeatX() { return m_repeatMode & RepeatModeX; }
     bool isRepeatY() { return m_repeatMode & RepeatModeY; }
     bool isRepeatXY() { return m_repeatMode == RepeatModeXY; }
 
 protected:
     virtual PassRefPtr<SkShader> createShader() = 0;
 
     void adjustExternalMemoryAllocated(int64_t delta);
 
     RepeatMode m_repeatMode;
     AffineTransform m_patternSpaceTransformation;
 
     Pattern(RepeatMode, int64_t externalMemoryAllocated = 0);
 
 private:
     RefPtr<SkShader> m_pattern;
     int64_t m_externalMemoryAllocated;
 };
 
 } // namespace blink
 
 #endif