remove legacy Skia flags

third_party/WebKit/Source/modules/offscreencanvas2d/OffscreenCanvasRenderingContext2D.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/offscreencanvas2d/OffscreenCanvasRenderingContext2D.h"
 
 #include "bindings/modules/v8/OffscreenCanvasRenderingContext2DOrWebGLRenderingContextOrWebGL2RenderingContext.h"
 #include "core/frame/ImageBitmap.h"
 #include "core/frame/Settings.h"
 #include "core/workers/WorkerGlobalScope.h"
@@ skipping 206 matching lines @@
 
 void OffscreenCanvasRenderingContext2D::didDraw(const SkIRect& dirtyRect) {}
 
 bool OffscreenCanvasRenderingContext2D::stateHasFilter() {
   // TODO: crbug.com/593838 make hasFilter accept nullptr
   // return state().hasFilter(nullptr, nullptr, IntSize(width(), height()),
   // this);
   return false;
 }
 
-SkImageFilter* OffscreenCanvasRenderingContext2D::stateGetFilter() {
+sk_sp<SkImageFilter> OffscreenCanvasRenderingContext2D::stateGetFilter() {
   // TODO: make getFilter accept nullptr
   // return state().getFilter(nullptr, nullptr, IntSize(width(), height()),
   // this);
   return nullptr;
 }
 
 void OffscreenCanvasRenderingContext2D::validateStateStack() const {
 #if DCHECK_IS_ON()
   if (SkCanvas* skCanvas = existingDrawingCanvas()) {
     DCHECK_EQ(static_cast<size_t>(skCanvas->getSaveCount()),
               m_stateStack.size() + 1);
   }
 #endif
 }
 
 bool OffscreenCanvasRenderingContext2D::isContextLost() const {
   return false;
 }
 
 bool OffscreenCanvasRenderingContext2D::isPaintable() const {
   return this->imageBuffer();
 }
 }