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diff --git a/gfx/angle/checkout/include/platform/FeaturesMtl.h b/gfx/angle/checkout/include/platform/FeaturesMtl.h
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+++ b/gfx/angle/checkout/include/platform/FeaturesMtl.h
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+//
+// Copyright 2019 The ANGLE Project Authors. All rights reserved.
+// Use of this source code is governed by a BSD-style license that can be
+// found in the LICENSE file.
+//
+// FeaturesMtl.h: Optional features for the Metal renderer.
+//
+
+#ifndef ANGLE_PLATFORM_FEATURESMTL_H_
+#define ANGLE_PLATFORM_FEATURESMTL_H_
+
+#include "platform/Feature.h"
+
+namespace angle
+{
+
+struct FeaturesMtl : FeatureSetBase
+{
+    // BaseVertex/Instanced draw support:
+    Feature hasBaseVertexInstancedDraw = {
+        "has_base_vertex_instanced_draw", FeatureCategory::MetalFeatures,
+        "The renderer supports base vertex instanced draw", &members};
+
+    // Support depth texture filtering
+    Feature hasDepthTextureFiltering = {
+        "has_depth_texture_filtering", FeatureCategory::MetalFeatures,
+        "The renderer supports depth texture's filtering other than nearest", &members};
+
+    // Support explicit memory barrier
+    Feature hasExplicitMemBarrier = {"has_explicit_mem_barrier_mtl", FeatureCategory::MetalFeatures,
+                                     "The renderer supports explicit memory barrier", &members};
+
+    // Some renderer can break render pass cheaply, i.e. desktop class GPUs.
+    Feature hasCheapRenderPass = {"has_cheap_render_pass_mtl", FeatureCategory::MetalFeatures,
+                                  "The renderer can cheaply break a render pass.", &members};
+
+    // Non-uniform compute shader dispatch support, i.e. Group size is not necessarily to be fixed:
+    Feature hasNonUniformDispatch = {
+        "has_non_uniform_dispatch", FeatureCategory::MetalFeatures,
+        "The renderer supports non uniform compute shader dispatch's group size", &members};
+
+    // fragment stencil output support
+    Feature hasStencilOutput = {"has_shader_stencil_output", FeatureCategory::MetalFeatures,
+                                "The renderer supports stencil output from fragment shader",
+                                &members};
+
+    // Texture swizzle support:
+    Feature hasTextureSwizzle = {"has_texture_swizzle", FeatureCategory::MetalFeatures,
+                                 "The renderer supports texture swizzle", &members};
+
+    Feature hasDepthAutoResolve = {
+        "has_msaa_depth_auto_resolve", FeatureCategory::MetalFeatures,
+        "The renderer supports MSAA depth auto resolve at the end of render pass", &members};
+
+    Feature hasStencilAutoResolve = {
+        "has_msaa_stencil_auto_resolve", FeatureCategory::MetalFeatures,
+        "The renderer supports MSAA stencil auto resolve at the end of render pass", &members};
+
+    Feature hasEvents = {"has_mtl_events", FeatureCategory::MetalFeatures,
+                         "The renderer supports MTL(Shared)Event", &members};
+
+    // On macos, separate depth & stencil buffers are not supproted. However, on iOS devices,
+    // they are supproted:
+    Feature allowSeparatedDepthStencilBuffers = {
+        "allow_separate_depth_stencil_buffers", FeatureCategory::MetalFeatures,
+        "Some Apple platforms such as iOS allows separate depth & stencil buffers, "
+        "whereas others such as macOS don't",
+        &members};
+
+    Feature allowMultisampleStoreAndResolve = {
+        "allow_msaa_store_and_resolve", FeatureCategory::MetalFeatures,
+        "The renderer supports MSAA store and resolve in the same pass", &members};
+
+    Feature allowGenMultipleMipsPerPass = {
+        "gen_multiple_mips_per_pass", FeatureCategory::MetalFeatures,
+        "The renderer supports generating multiple mipmaps per pass", &members};
+
+    Feature forceBufferGPUStorage = {
+        "force_buffer_gpu_storage_mtl", FeatureCategory::MetalFeatures,
+        "On systems that support both buffer's memory allocation on GPU and shared memory (such as "
+        "macOS), force using GPU memory allocation for buffers.",
+        &members};
+
+    Feature forceD24S8AsUnsupported = {"force_d24s8_as_unsupported", FeatureCategory::MetalFeatures,
+                                       "Force Depth24Stencil8 format as unsupported.", &members};
+};
+
+}  // namespace angle
+
+#endif  // ANGLE_PLATFORM_FEATURESMTL_H_