Updated Blink WebVR interfaces to WebVR v1 spec

third_party/WebKit/Source/modules/vr/VRLayer.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.
+
+typedef HTMLCanvasElement VRSource;
+
+// http://mozvr.github.io/webvr-spec/webvr.html#vrlayer
+[
+    RuntimeEnabled=WebVR
+] dictionary VRLayer {
+  // The canvas to be presented to the VRDisplay
+  VRSource? source = null;
+
+  // The left and right bounds contain 4 git statvalues defining the texture bounds
+  // within the canvas to present to the eye in UV space.
+  // [0] left offset of the bounds (0.0 - 1.0)
+  // [1] top offset of the bounds (0.0 - 1.0)
+  // [2] width of the bounds (0.0 - 1.0)
+  // [3] height of the bounds (0.0 - 1.0)
+  sequence<float>? leftBounds; //= [0.0, 0.0, 0.5, 1.0];
+  sequence<float>? rightBounds; //= [0.5, 0.0, 0.5, 1.0];
+};