Adding Chrome-side WebVR interface

content/common/vr_param_traits.h

Index: content/common/vr_param_traits.h
diff --git a/content/common/vr_param_traits.h b/content/common/vr_param_traits.h
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+++ b/content/common/vr_param_traits.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_COMMON_VR_PARAM_TRAITS_H_
+#define CONTENT_COMMON_VR_PARAM_TRAITS_H_
+
+#include <string>
+
+#include "ipc/ipc_param_traits.h"
+
+class PickleIterator;
+
+namespace blink { class WebVRDevice; }
+
+namespace IPC {
+
+class Message;
+
+template <>
+struct ParamTraits<blink::WebVRDevice> {
+  typedef blink::WebVRDevice param_type;
+  static void Write(Message* m, const blink::WebVRDevice& p);
+  static bool Read(const Message* m,
+                   PickleIterator* iter,
+                   blink::WebVRDevice* p);
+  static void Log(const blink::WebVRDevice& p, std::string* l);
+};
+
+} // namespace IPC
+
+#endif