From c53ee755538331fc441d02c0e4b7c533b920cd7d Mon Sep 17 00:00:00 2001
From: Jason Simmons <jason-simmons@users.noreply.github.com>
Date: Wed, 27 Sep 2023 07:44:54 -0700
Subject: [PATCH] Declare native wrapper classes in the GPU package as base
 classes (flutter/engine#46304)

This prohibits other implementations of the class interface that can not act as native wrappers.

See https://github.com/flutter/flutter/issues/123756
---
 engine/src/flutter/lib/gpu/lib/src/context.dart | 2 +-
 engine/src/flutter/lib/ui/experiments/gpu.dart  | 2 +-
 2 files changed, 2 insertions(+), 2 deletions(-)

diff --git a/engine/src/flutter/lib/gpu/lib/src/context.dart b/engine/src/flutter/lib/gpu/lib/src/context.dart
index 1c1be14267..a0efc586d1 100644
--- a/engine/src/flutter/lib/gpu/lib/src/context.dart
+++ b/engine/src/flutter/lib/gpu/lib/src/context.dart
@@ -8,7 +8,7 @@ import 'dart:nativewrappers';
 /// A handle to a graphics context. Used to create and manage GPU resources.
 ///
 /// To obtain the default graphics context, use [getContext].
-class GpuContext extends NativeFieldWrapperClass1 {
+base class GpuContext extends NativeFieldWrapperClass1 {
   /// Creates a new graphics context that corresponds to the default Impeller
   /// context.
   GpuContext._createDefault() {
diff --git a/engine/src/flutter/lib/ui/experiments/gpu.dart b/engine/src/flutter/lib/ui/experiments/gpu.dart
index 282f955e66..6b07dc65ef 100644
--- a/engine/src/flutter/lib/ui/experiments/gpu.dart
+++ b/engine/src/flutter/lib/ui/experiments/gpu.dart
@@ -147,7 +147,7 @@ class RasterPipeline {}
 /// A handle to a graphics context. Used to create and manage GPU resources.
 ///
 /// To obtain the default graphics context, use [getGpuContext].
-class GpuContext extends NativeFieldWrapperClass1 {
+base class GpuContext extends NativeFieldWrapperClass1 {
   /// Creates a new graphics context that corresponds to the default Impeller
   /// context.
   GpuContext._createDefault() {