upgrade to Filament 1.21.0

ios/include/imageio/ImageDiffer.h

@@ -1,34 +0,0 @@
-/*
- * Copyright 2018 The Android Open Source Project
- *
- * Licensed under the Apache License, Version 2.0 (the "License");
- * you may not use this file except in compliance with the License.
- * You may obtain a copy of the License at
- *
- *      http://www.apache.org/licenses/LICENSE-2.0
- *
- * Unless required by applicable law or agreed to in writing, software
- * distributed under the License is distributed on an "AS IS" BASIS,
- * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
- * See the License for the specific language governing permissions and
- * limitations under the License.
- */
-
-#include <image/LinearImage.h>
-
-#include <utils/Path.h>
-
-namespace image {
-
-enum class ComparisonMode {
-    SKIP,
-    COMPARE,
-    UPDATE,
-};
-
-// Saves an image to disk or does a load-and-compare, depending on comparison mode.
-// This makes it easy for unit tests to have compare / update commands.
-// The passed-in image is the "result image" and the expected image is the "golden image".
-void updateOrCompare(LinearImage result, const utils::Path& golden, ComparisonMode, float epsilon);
-
-}  // namespace image