use Make instead of Create to return a shared shader

src/core/SkBitmapProcShader.h

Index: src/core/SkBitmapProcShader.h
diff --git a/src/core/SkBitmapProcShader.h b/src/core/SkBitmapProcShader.h
index dc4d832ca3dad0be49f9a7d84ed279010f7b5a64..185a95de66831f3dae430c361232f887e37a8cb2 100644
--- a/src/core/SkBitmapProcShader.h
+++ b/src/core/SkBitmapProcShader.h
@@ -59,7 +59,7 @@ typedef SkSmallAllocator<3, 2100> SkTBlitterAllocator;
 
 // If alloc is non-nullptr, it will be used to allocate the returned SkShader, and MUST outlive
 // the SkShader.
-SkShader* SkCreateBitmapShader(const SkBitmap& src, SkShader::TileMode, SkShader::TileMode,
-                               const SkMatrix* localMatrix, SkTBlitterAllocator* alloc);
+sk_sp<SkShader> SkMakeBitmapShader(const SkBitmap& src, SkShader::TileMode, SkShader::TileMode,
+                                   const SkMatrix* localMatrix, SkTBlitterAllocator* alloc);
 
 #endif