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..5cdda55841212f561c3e2382d459d7db4b4e820a
--- /dev/null
+++ b/Source/modules/vr/HMDVRDevice.idl
@@ -0,0 +1,20 @@
+// Copyright 2014 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"
+};
+
+[
+    RuntimeEnabled=VRDevice,
+    GarbageCollected,

[philipj_slow, 2015/02/06 01:57:14]

Add TypeChecking=Interface to all interfaces where it would make a difference,
so that you'll get a TypeError for setFieldOfView(window) for example.

+] interface HMDVRDevice : VRDevice {
+    DOMPoint getEyeTranslation(VREye whichEye);

[philipj_slow, 2015/02/06 01:57:14]

I guess you know about
https://groups.google.com/a/chromium.org/d/msg/blink-dev/V_bJNtOg0oM/o4Mi41Yx...
?

+    VRFieldOfView getCurrentEyeFieldOfView(VREye whichEye);
+    VRFieldOfView getRecommendedEyeFieldOfView(VREye whichEye);
+    VRFieldOfView getMaximumEyeFieldOfView(VREye whichEye);
+    void setFieldOfView(optional VRFieldOfView leftFov, optional VRFieldOfView rightFov);
+    DOMRect getRecommendedEyeRenderRect(VREye whichEye);
+};