Create a GraphicsContext from a DisplayList.

Source/platform/graphics/GraphicsContext.h

 /*
  * Copyright (C) 2003, 2006, 2007, 2008, 2009 Apple Inc. All rights reserved.
  * Copyright (C) 2008-2009 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
  *    notice, this list of conditions and the following disclaimer.
@@ skipping 57 matching lines @@
     enum AccessMode {
         ReadOnly,
         ReadWrite
     };
 
     enum DisabledMode {
         NothingDisabled = 0, // Run as normal.
         FullyDisabled = 1 // Do absolutely minimal work to remove the cost of the context from performance tests.
     };
 
+    // Create a context using an existing canvas.
     explicit GraphicsContext(SkCanvas*, DisabledMode = NothingDisabled);
+
+    // Create a context with a recording canvas of the given size, and beginRecording on it.
+    explicit GraphicsContext(const FloatRect&, DisabledMode = NothingDisabled);
+
     ~GraphicsContext();
 
     // Returns the canvas used for painting. Must not be called if painting is disabled.
     // Accessing the backing canvas this way flushes all queued save ops,
     // so it should be avoided. Use the corresponding draw/matrix/clip methods instead.
     SkCanvas* canvas()
     {
         // Flush any pending saves.
         realizeCanvasSave();
 
@@ skipping 329 matching lines @@
 
 private:
     const GraphicsContextState* immutableState() const { return m_paintState; }
 
     GraphicsContextState* mutableState()
     {
         realizePaintSave();
         return m_paintState;
     }
 
+    void initializeStateStack();
+
+    void beginRecordingImpl(PassRefPtr<DisplayList>, uint32_t, SkCanvas*, SkMatrix&);
+
     static void setPathFromConvexPoints(SkPath*, size_t, const FloatPoint*);
     static void setRadii(SkVector*, IntSize, IntSize, IntSize, IntSize);
 
     static PassRefPtr<SkColorFilter> WebCoreColorFilterToSkiaColorFilter(ColorFilter);
 
 #if OS(MACOSX)
     static inline int focusRingOutset(int offset) { return offset + 2; }
     static inline int focusRingWidth(int width) { return width; }
 #else
     static inline int focusRingOutset(int offset) { return 0; }
@@ skipping 98 matching lines @@
     bool m_accelerated : 1;
     bool m_isCertainlyOpaque : 1;
     bool m_printing : 1;
     bool m_antialiasHairlineImages : 1;
     bool m_shouldSmoothFonts : 1;
 };
 
 } // namespace blink
 
 #endif // GraphicsContext_h