Copy SkMetaData before painting printed plugin contents.

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 19 matching lines @@
 
 #include "platform/PlatformExport.h"
 #include "platform/fonts/Font.h"
 #include "platform/geometry/FloatRect.h"
 #include "platform/geometry/FloatRoundedRect.h"
 #include "platform/graphics/DashArray.h"
 #include "platform/graphics/DrawLooperBuilder.h"
 #include "platform/graphics/ImageOrientation.h"
 #include "platform/graphics/GraphicsContextState.h"
 #include "platform/graphics/skia/SkiaUtils.h"
+#include "third_party/skia/include/core/SkMetaData.h"
 #include "third_party/skia/include/core/SkPictureRecorder.h"
 #include "third_party/skia/include/core/SkRegion.h"
 #include "wtf/FastAllocBase.h"
 #include "wtf/Forward.h"
 #include "wtf/Noncopyable.h"
 #include "wtf/PassOwnPtr.h"
 
 class SkBitmap;
 class SkImage;
 class SkPaint;
@@ skipping 16 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.
     };
 
-    explicit GraphicsContext(DisplayItemList*, DisabledMode = NothingDisabled);
+    explicit GraphicsContext(DisplayItemList*, DisabledMode = NothingDisabled, SkMetaData* = 0);
 
     // TODO(chrishtr): Once Slimming Paint launches this should be removed (crbug.com/471333).
     // A 0 canvas is allowed, but in such cases the context must only have canvas
     // related commands called when within a beginRecording/endRecording block.
     // Furthermore, save/restore calls must be balanced any time the canvas is 0.
-    static PassOwnPtr<GraphicsContext> deprecatedCreateWithCanvas(SkCanvas*, DisabledMode = NothingDisabled);
+    static PassOwnPtr<GraphicsContext> deprecatedCreateWithCanvas(SkCanvas*, DisabledMode = NothingDisabled, SkMetaData* = 0);
 
     ~GraphicsContext();
 
     SkCanvas* canvas() { return m_canvas; }
     const SkCanvas* canvas() const { return m_canvas; }
 
     DisplayItemList* displayItemList() { return m_displayItemList; }
 
     void resetCanvas(SkCanvas*);
 
@@ skipping 206 matching lines @@
     // public decl needed for OwnPtr wrapper.
     class RecordingState;
 
 #if ENABLE(ASSERT)
     void setInDrawingRecorder(bool);
 #endif
 
     static PassRefPtr<SkColorFilter> WebCoreColorFilterToSkiaColorFilter(ColorFilter);
 
 private:
-    explicit GraphicsContext(SkCanvas*, DisplayItemList*, DisabledMode = NothingDisabled);
+    explicit GraphicsContext(SkCanvas*, DisplayItemList*, DisabledMode = NothingDisabled, SkMetaData* = 0);
 
     const GraphicsContextState* immutableState() const { return m_paintState; }
 
     GraphicsContextState* mutableState()
     {
         realizePaintSave();
         return m_paintState;
     }
 
     template<typename DrawTextFunc>
@@ skipping 43 matching lines @@
                 m_paintState = m_paintStateStack[m_paintStateIndex].get();
                 m_paintState->copy(*priorPaintState);
             }
         }
     }
 
     void fillRectWithRoundedHole(const FloatRect&, const FloatRoundedRect& roundedHoleRect, const Color&);
 
     bool isRecording() const;
 
+    const SkMetaData& metaData() const { return m_metaData; }
+
     // null indicates painting is contextDisabled. Never delete this object.
     SkCanvas* m_canvas;
 
     // This stores the canvas object used to construct the GraphicsContext, if any. It is only
     // used when Slimming Paint is active.
     SkCanvas* m_originalCanvas;
 
     // This being null indicates not to paint into a DisplayItemList, and instead directly into the canvas.
     DisplayItemList* m_displayItemList;
 
     // Paint states stack. Enables local drawing state change with save()/restore() calls.
     // This state controls the appearance of drawn content.
     // We do not delete from this stack to avoid memory churn.
     Vector<OwnPtr<GraphicsContextState>> m_paintStateStack;
     // Current index on the stack. May not be the last thing on the stack.
     unsigned m_paintStateIndex;
     // Raw pointer to the current state.
     GraphicsContextState* m_paintState;
 
     // Only used when Slimming Paint is off. When it is on, m_pictureRecorder is used instead.
     Vector<OwnPtr<RecordingState>> m_recordingStateStack;
     SkPictureRecorder m_pictureRecorder;
 
+    SkMetaData m_metaData;
+
 #if ENABLE(ASSERT)
     unsigned m_layerCount;
     bool m_disableDestructionChecks;
     bool m_inDrawingRecorder;
 #endif
 
     const DisabledMode m_disabledState;
 
     float m_deviceScaleFactor;
 
     unsigned m_accelerated : 1;
     unsigned m_printing : 1;
+    unsigned m_hasMetaData : 1;
 };
 
 } // namespace blink
 
 #endif // GraphicsContext_h