remove legacy Skia flags

third_party/WebKit/Source/modules/canvas2d/CanvasRenderingContext2D.h

 /*
  * Copyright (C) 2006, 2007, 2009, 2010, 2011, 2012 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 161 matching lines @@
   bool parseColorOrCurrentColor(Color&, const String& colorString) const final;
 
   SkCanvas* drawingCanvas() const final;
   SkCanvas* existingDrawingCanvas() const final;
   void disableDeferral(DisableDeferralReason) final;
 
   AffineTransform baseTransform() const final;
   void didDraw(const SkIRect& dirtyRect) final;
 
   bool stateHasFilter() final;
-  SkImageFilter* stateGetFilter() final;
+  sk_sp<SkImageFilter> stateGetFilter() final;
   void snapshotStateForFilter() final;
 
   void validateStateStack() const final;
 
   PassRefPtr<Image> getImage(AccelerationHint, SnapshotReason) const final;
 
   bool isAccelerationOptimalForCanvasContent() const;
 
   void resetUsageTracking();
 
@@ skipping 64 matching lines @@
 
 DEFINE_TYPE_CASTS(CanvasRenderingContext2D,
                   CanvasRenderingContext,
                   context,
                   context->is2d() && context->canvas(),
                   context.is2d() && context.canvas());
 
 }  // namespace blink
 
 #endif  // CanvasRenderingContext2D_h