remove legacy Skia flags

third_party/WebKit/Source/modules/canvas2d/BaseRenderingContext2D.cpp

 // 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.
 
 #include "modules/canvas2d/BaseRenderingContext2D.h"
 
 #include "bindings/core/v8/ExceptionMessages.h"
 #include "bindings/core/v8/ExceptionState.h"
 #include "bindings/core/v8/ExceptionStatePlaceholder.h"
 #include "core/css/cssom/CSSURLImageValue.h"
@@ skipping 1015 matching lines @@
       // for SkMatrix to find the transform to be non-invertible at this stage.
       // crbug.com/504687
       return;
     }
     c->save();
     c->concat(invCtm);
     SkRect bounds = dstRect;
     ctm.mapRect(&bounds);
     SkPaint layerPaint;
     layerPaint.setBlendMode(paint->getBlendMode());
-    layerPaint.setImageFilter(paint->getImageFilter());
+    layerPaint.setImageFilter(sk_ref_sp(paint->getImageFilter()));
 
     c->saveLayer(&bounds, &layerPaint);
     c->concat(ctm);
     imagePaint.setBlendMode(SkBlendMode::kSrcOver);
     imagePaint.setImageFilter(nullptr);
   }
 
   if (!imageSmoothingEnabled() &&
       isDrawScalingDown(srcRect, dstRect, state().transform().xScaleSquared(),
                         state().transform().yScaleSquared()))
@@ skipping 936 matching lines @@
       ExpensiveCanvasHeuristicParameters::ShadowFixedCost[index] *
           m_usageCounters.numBlurredShadows +
       ExpensiveCanvasHeuristicParameters::
               ShadowVariableCostPerAreaTimesShadowBlurSquared[index] *
           m_usageCounters.boundingBoxAreaTimesShadowBlurSquared;
 
   return basicCostOfDrawCalls + fillTypeAdjustment + shadowAdjustment;
 }
 
 }  // namespace blink