Adding WebVR interface to Blink

Source/modules/vr/HMDVRDevice.idl

Index: Source/modules/vr/HMDVRDevice.idl
diff --git a/Source/modules/vr/HMDVRDevice.idl b/Source/modules/vr/HMDVRDevice.idl
new file mode 100644
index 0000000000000000000000000000000000000000..5f4c340b024cf2843816fe35212a6168ca03e8fb
--- /dev/null
+++ b/Source/modules/vr/HMDVRDevice.idl
@@ -0,0 +1,19 @@
+// Copyright 2015 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.
+
+enum VREye {
+    "left",
+    "right"
+};
+
+// An HMDVRDevice represents a Head Mounted Display. The interface provides all
+// the information necessary to correctly render a stereo 3D scene for a given
+// headset.

[Mike West, 2015/03/17 05:25:26]

Nit: Can you add a link to the spec to this and other IDL files?

+[
+    RuntimeEnabled=VRDevice,
+    TypeChecking=Interface
+] interface HMDVRDevice : VRDevice {
+    VREyeParameters getEyeParameters(VREye whichEye);
+    void setFieldOfView(optional VRFieldOfView leftFov, optional VRFieldOfView rightFov);
+};