Revert of add Make variations to return SkImage by sk_sp

src/core/SkShader.cpp

 /*
  * Copyright 2006 The Android Open Source Project
  *
  * Use of this source code is governed by a BSD-style license that can be
  * found in the LICENSE file.
  */
 
 #include "SkAtomics.h"
 #include "SkBitmapProcShader.h"
 #include "SkColorShader.h"
@@ skipping 220 matching lines @@
 
 sk_sp<SkShader> SkShader::MakeEmptyShader() { return sk_make_sp<SkEmptyShader>(); }
 
 sk_sp<SkShader> SkShader::MakeColorShader(SkColor color) { return sk_make_sp<SkColorShader>(color); }
 
 sk_sp<SkShader> SkShader::MakeBitmapShader(const SkBitmap& src, TileMode tmx, TileMode tmy,
                                            const SkMatrix* localMatrix) {
     return SkMakeBitmapShader(src, tmx, tmy, localMatrix, nullptr);
 }
 
-sk_sp<SkShader> SkShader::MakePictureShader(sk_sp<SkPicture> src, TileMode tmx, TileMode tmy,
+sk_sp<SkShader> SkShader::MakePictureShader(sk_sp<const SkPicture> src, TileMode tmx, TileMode tmy,
                                             const SkMatrix* localMatrix, const SkRect* tile) {
     return SkPictureShader::Make(std::move(src), tmx, tmy, localMatrix, tile);
 }
 
 #ifndef SK_IGNORE_TO_STRING
 void SkShader::toString(SkString* str) const {
     if (!fLocalMatrix.isIdentity()) {
         str->append(" ");
         fLocalMatrix.toString(str);
     }
@@ skipping 129 matching lines @@
 
 #ifdef SK_SUPPORT_LEGACY_CREATESHADER_PTR
 SkShader* SkShader::CreateComposeShader(SkShader* dst, SkShader* src, SkXfermode::Mode mode) {
     return MakeComposeShader(sk_ref_sp(dst), sk_ref_sp(src), mode).release();
 }
 SkShader* SkShader::CreateComposeShader(SkShader* dst, SkShader* src, SkXfermode* xfer) {
     return MakeComposeShader(sk_ref_sp(dst), sk_ref_sp(src), xfer).release();
 }
 SkShader* SkShader::CreatePictureShader(const SkPicture* src, TileMode tmx, TileMode tmy,
                                      const SkMatrix* localMatrix, const SkRect* tile) {
-    return MakePictureShader(sk_ref_sp(const_cast<SkPicture*>(src)), tmx, tmy,
-                             localMatrix, tile).release();
+    return MakePictureShader(sk_ref_sp(src), tmx, tmy, localMatrix, tile).release();
 }
 #endif