Update SkBlurImageFilter to sk_sp

src/utils/SkLua.cpp

 /*
  * Copyright 2013 Google Inc.
  *
  * Use of this source code is governed by a BSD-style license that can be
  * found in the LICENSE file.
  */
 
 #include "SkLua.h"
 
 #if SK_SUPPORT_GPU
@@ skipping 1945 matching lines @@
         return 0;
     } else {
         push_ref(L, doc)->unref();
         return 1;
     }
 }
 
 static int lsk_newBlurImageFilter(lua_State* L) {
     SkScalar sigmaX = lua2scalar_def(L, 1, 0);
     SkScalar sigmaY = lua2scalar_def(L, 2, 0);
-    SkImageFilter* imf = SkBlurImageFilter::Create(sigmaX, sigmaY);
-    if (nullptr == imf) {
+    sk_sp<SkImageFilter> imf(SkBlurImageFilter::Make(sigmaX, sigmaY, nullptr));
+    if (!imf) {
         lua_pushnil(L);
     } else {
-        push_ref(L, imf)->unref();
+        push_ref(L, std::move(imf));
     }
     return 1;
 }
 
 static int lsk_newLinearGradient(lua_State* L) {
     SkScalar x0 = lua2scalar_def(L, 1, 0);
     SkScalar y0 = lua2scalar_def(L, 2, 0);
     SkColor  c0 = lua2color(L, 3);
     SkScalar x1 = lua2scalar_def(L, 4, 0);
     SkScalar y1 = lua2scalar_def(L, 5, 0);
     SkColor  c1 = lua2color(L, 6);
 
     SkPoint pts[] = { { x0, y0 }, { x1, y1 } };
     SkColor colors[] = { c0, c1 };
-    auto s = SkGradientShader::MakeLinear(pts, colors, nullptr, 2, SkShader::kClamp_TileMode);
+    sk_sp<SkShader> s(SkGradientShader::MakeLinear(pts, colors, nullptr, 2,
+                                                   SkShader::kClamp_TileMode));
     if (!s) {
         lua_pushnil(L);
     } else {
         push_ref(L, std::move(s));
     }
     return 1;
 }
 
 static int lsk_newMatrix(lua_State* L) {
     push_new<SkMatrix>(L)->reset();
@@ skipping 140 matching lines @@
     REG_CLASS(L, SkTextBlob);
     REG_CLASS(L, SkTypeface);
     REG_CLASS(L, SkXfermode);
 }
 
 extern "C" int luaopen_skia(lua_State* L);
 extern "C" int luaopen_skia(lua_State* L) {
     SkLua::Load(L);
     return 0;
 }