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diff --git a/components/script/dom/webidls/XRWebGLBinding.webidl b/components/script/dom/webidls/XRWebGLBinding.webidl
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+/* This Source Code Form is subject to the terms of the Mozilla Public
+ * License, v. 2.0. If a copy of the MPL was not distributed with this
+ * file, You can obtain one at https://mozilla.org/MPL/2.0/. */
+
+// https://immersive-web.github.io/layers/#XRWebGLBindingtype
+[SecureContext, Exposed=Window, Pref="dom.webxr.layers.enabled"]
+interface XRWebGLBinding {
+  constructor(XRSession session, XRWebGLRenderingContext context);
+
+//  readonly attribute double nativeProjectionScaleFactor;
+
+  [Throws] XRProjectionLayer createProjectionLayer(XRTextureType textureType,
+                                          optional XRProjectionLayerInit init = {});
+  [Throws] XRQuadLayer createQuadLayer(XRTextureType textureType,
+                              optional XRQuadLayerInit init);
+  [Throws] XRCylinderLayer createCylinderLayer(XRTextureType textureType,
+                                      optional XRCylinderLayerInit init);
+  [Throws] XREquirectLayer createEquirectLayer(XRTextureType textureType,
+                                      optional XREquirectLayerInit init);
+  [Throws] XRCubeLayer createCubeLayer(optional XRCubeLayerInit init);
+
+  [Throws] XRWebGLSubImage getSubImage(XRCompositionLayer layer, XRFrame frame, optional XREye eye = "none");
+  [Throws] XRWebGLSubImage getViewSubImage(XRProjectionLayer layer, XRView view);
+};
+
+dictionary XRProjectionLayerInit {
+  boolean depth = true;
+  boolean stencil = false;
+  boolean alpha = true;
+  double scaleFactor = 1.0;
+};
+
+dictionary XRQuadLayerInit : XRLayerInit {
+  XRRigidTransform? transform;
+  float width = 1.0;
+  float height = 1.0;
+  boolean isStatic = false;
+};
+
+dictionary XRCylinderLayerInit : XRLayerInit {
+  XRRigidTransform? transform;
+  float radius = 2.0;
+  float centralAngle = 0.78539;
+  float aspectRatio = 2.0;
+  boolean isStatic = false;
+};
+
+dictionary XREquirectLayerInit : XRLayerInit {
+  XRRigidTransform? transform;
+  float radius = 0;
+  float centralHorizontalAngle = 6.28318;
+  float upperVerticalAngle = 1.570795;
+  float lowerVerticalAngle = -1.570795;
+  boolean isStatic = false;
+};
+
+dictionary XRCubeLayerInit : XRLayerInit {
+  DOMPointReadOnly? orientation;
+  boolean isStatic = false;
+};
+
+dictionary XRLayerInit {
+  required XRSpace space;
+  required unsigned long viewPixelWidth;
+  required unsigned long viewPixelHeight;
+  XRLayerLayout layout = "mono";
+  boolean depth = false;
+  boolean stencil = false;
+  boolean alpha = true;
+};
+
+enum XRTextureType {
+  "texture",
+  "texture-array"
+};
+
+enum XRLayerLayout {
+  "default",
+  "mono",
+  "stereo",
+  "stereo-left-right",
+  "stereo-top-bottom"
+};