Adding Chrome-side WebVR interface

content/browser/vr/vr_device.h

+// 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.
+
+#ifndef CONTENT_BROWSER_VR_VR_DEVICE_H
+#define CONTENT_BROWSER_VR_VR_DEVICE_H
+
+namespace blink {
+struct WebHMDSensorState;
+struct WebVRFieldOfView;
+class WebVRDevice;
+struct WebVRVector4;
+}
+
+namespace ui {
+class BaseWindow;
+}
+
+namespace content {
+
+class VRDeviceProvider;
+

[no sievers, 2015/03/19 01:24:51]

So all of this - device, service, provider - gets called into exclusively from
the IO thread?
That should probably be commented on in the headers. And should we have a few
thread checks in the right places?

+class VRDevice {
+ public:
+  VRDevice(VRDeviceProvider* provider);
+  virtual ~VRDevice();
+
+  VRDeviceProvider* provider() const { return provider_; }
+  unsigned int id() const { return id_; }
+
+  virtual void GetVRDevice(blink::WebVRDevice* device) = 0;
+  virtual void GetHMDSensorState(blink::WebHMDSensorState* state) = 0;
+  virtual void ResetSensor() = 0;
+  virtual void GetRenderTargetRects(
+      blink::WebVRFieldOfView leftFov,
+      blink::WebVRFieldOfView rightFov,
+      blink::WebVRVector4* leftRect,
+      blink::WebVRVector4* rightRect) = 0;
+
+ private:
+  VRDeviceProvider* provider_;
+  unsigned int id_;
+
+  static unsigned int next_id_;
+};
+
+}  // namespace content
+
+#endif  // CONTENT_BROWSER_VR_VR_DEVICE_H