Adding Chrome-side WebVR interface

content/browser/vr/vr_service_consumer.h

Index: content/browser/vr/vr_service_consumer.h
diff --git a/content/browser/vr/vr_service_consumer.h b/content/browser/vr/vr_service_consumer.h
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+// 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_SERVICE_CONSUMER_H
+#define CONTENT_BROWSER_VR_VR_SERVICE_CONSUMER_H
+
+#include "base/basictypes.h"
+#include "content/common/content_export.h"
+
+namespace content {
+
+class VRService;
+
+// Provides a consistent mechanism for tracking objects which use the VRService.
+// In the future may also provide an interface for the service to push messages.
+class CONTENT_EXPORT VRServiceConsumer {
+ public:
+  VRServiceConsumer();
+  // Constructor for testing.
+  explicit VRServiceConsumer(VRService* service);
+
+  virtual ~VRServiceConsumer();
+
+  // Returns the VRService singleton.
+  VRService* GetServiceInstance();
+
+ private:
+  VRService* service_;
+  bool registered_with_service_;
+
+  DISALLOW_COPY_AND_ASSIGN(VRServiceConsumer);
+};
+
+}  // namespace content
+
+#endif  // CONTENT_BROWSER_VR_VR_SERVICE_CONSUMER_H