Adding Chrome-side WebVR interface

content/renderer/vr/vr_dispatcher.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_RENDERER_VR_DISPATCHER_H_
+#define CONTENT_RENDERER_VR_DISPATCHER_H_
+
+#include <vector>
+
+#include "base/id_map.h"
+#include "content/common/vr_service.mojom.h"
+#include "third_party/WebKit/public/platform/WebVector.h"
+#include "third_party/WebKit/public/platform/modules/vr/WebVR.h"
+#include "third_party/WebKit/public/platform/modules/vr/WebVRClient.h"
+
+namespace content {
+
+class ServiceRegistry;
+
+class VRDispatcher : NON_EXPORTED_BASE(public blink::WebVRClient) {
+ public:
+  explicit VRDispatcher(ServiceRegistry* service_registry);
+  ~VRDispatcher();
+
+  // blink::WebVRClient implementation.
+  void getDevices(blink::WebVRGetDevicesCallback* callback) override;
+
+  void getSensorState(unsigned int index,
+                      blink::WebHMDSensorState& state) override;
+
+  void resetSensor(unsigned int index) override;
+
+ private:
+  // Helper method that returns an initialized PermissionServicePtr.
+  VRServicePtr& GetVRServicePtr();
+
+  // Callback handlers
+  void OnGetDevices(int request_id,
+                    const mojo::Array<VRDeviceInfoPtr>& devices);
+  static void OnGetSensorState(blink::WebHMDSensorState* state,
+                               const VRSensorStatePtr& mojo_state);
+
+  // Tracks requests sent to browser to match replies with callbacks.
+  // Owns callback objects.
+  IDMap<blink::WebVRGetDevicesCallback, IDMapOwnPointer> pending_requests_;
+
+  ServiceRegistry* service_registry_;
+  VRServicePtr vr_service_;
+
+  DISALLOW_COPY_AND_ASSIGN(VRDispatcher);
+};
+
+}  // namespace content
+
+#endif  // CONTENT_RENDERER_VR_DISPATCHER_H_