Update WebVR interface to match the 1.1 spec

third_party/WebKit/Source/modules/vr/VRFrameData.idl

+// Copyright 2016 The Chromium Authors. All rights reserved.
+// Use of this source code is governed by a BSD-style license that can be
+// found in the LICENSE file.
+
+// https://w3c.github.io/webvr/#interface-vrframedata
+[
+    RuntimeEnabled=WebVR,
+    Constructor,
+] interface VRFrameData {
+    readonly attribute DOMHighResTimeStamp timestamp;
+
+    readonly attribute Float32Array leftProjectionMatrix;
+    readonly attribute Float32Array leftViewMatrix;
+
+    readonly attribute Float32Array rightProjectionMatrix;
+    readonly attribute Float32Array rightViewMatrix;
+
+    readonly attribute VRPose pose;
+};