Adding Chrome-side WebVR interface

content/browser/vr/vr_device_provider.h

Index: content/browser/vr/vr_device_provider.h
diff --git a/content/browser/vr/vr_device_provider.h b/content/browser/vr/vr_device_provider.h
new file mode 100644
index 0000000000000000000000000000000000000000..fd9ae5912f959e7952051809a5c55b7ac899a7b5
--- /dev/null
+++ b/content/browser/vr/vr_device_provider.h
@@ -0,0 +1,33 @@
+// 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_PROVIDER_H
+#define CONTENT_BROWSER_VR_VR_DEVICE_PROVIDER_H
+
+#include <vector>
+
+namespace content {
+
+class VRDevice;
+
+class VRDeviceProvider {
+ public:
+  VRDeviceProvider() {}
+  virtual ~VRDeviceProvider() {}
+
+  virtual void GetDevices(std::vector<VRDevice*>& devices) = 0;
+
+  // Some VR APIs may require that they are initialized fairly early on in the
+  // app lifetime. Lightweight initialization should happen here.
+  virtual void Initialize() = 0;
+
+  // Indicates that no renderers are currently using the VR service. The
+  // provider should destroy all of it's devices and perform any teardown
+  // necessary, but should be able to start up again if GetDevices is called.
+  virtual void ReleaseDevices() = 0;
+};
+
+}  // namespace content
+
+#endif  // CONTENT_BROWSER_VR_DEVICE_VR_DEVICE_PROVIDER_H