remove legacy Skia flags

third_party/WebKit/Source/modules/csspaint/PaintRenderingContext2D.h

 // Copyright 2016 The Chromium Authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 #ifndef PaintRenderingContext2D_h
 #define PaintRenderingContext2D_h
 
 #include "bindings/core/v8/ScriptWrappable.h"
 #include "modules/ModulesExport.h"
 #include "modules/canvas2d/BaseRenderingContext2D.h"
@@ skipping 45 matching lines @@
 
   AffineTransform baseTransform() const final;
 
   void didDraw(const SkIRect& dirtyRect) final;
 
   // TODO(ikilpatrick): We'll need to either only accept resolved filters
   // from a typed-om <filter> object, or use the appropriate style resolution
   // host to determine 'em' units etc in filters. At the moment just pretend
   // that we don't have a filter set.
   bool stateHasFilter() final { return false; }
-  SkImageFilter* stateGetFilter() final { return nullptr; }
+  sk_sp<SkImageFilter> stateGetFilter() final { return nullptr; }
   void snapshotStateForFilter() final {}
 
   void validateStateStack() const final;
 
   bool hasAlpha() const final { return m_hasAlpha; }
 
   // PaintRenderingContext2D cannot lose it's context.
   bool isContextLost() const final { return false; }
 
  private:
   PaintRenderingContext2D(std::unique_ptr<ImageBuffer>,
                           bool hasAlpha,
                           float zoom);
 
   std::unique_ptr<ImageBuffer> m_imageBuffer;
   bool m_hasAlpha;
 };
 
 }  // namespace blink
 
 #endif  // PaintRenderingContext2D_h