Added allowvr attribute to iframes and vrEnabled to Document

third_party/WebKit/Source/modules/vr/NavigatorVR.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 NavigatorVR_h
 #define NavigatorVR_h
 
 #include "bindings/core/v8/ScriptPromise.h"
 #include "core/frame/DOMWindowProperty.h"
 #include "modules/ModulesExport.h"
 #include "modules/vr/VRDisplay.h"
 #include "modules/vr/VRDisplayEvent.h"
 #include "platform/Supplementable.h"
 #include "platform/heap/Handle.h"
 #include "public/platform/WebVector.h"
 #include "wtf/Noncopyable.h"
 
 namespace blink {
 
 class Document;
 class Navigator;
 class VRController;
 
 class MODULES_EXPORT NavigatorVR final : public GarbageCollectedFinalized<NavigatorVR>, public Supplement<Navigator>, public DOMWindowProperty {
     USING_GARBAGE_COLLECTED_MIXIN(NavigatorVR);
     WTF_MAKE_NONCOPYABLE(NavigatorVR);
 public:
     static NavigatorVR* from(Document&);
     static NavigatorVR& from(Navigator&);
+
     virtual ~NavigatorVR();
 
     static ScriptPromise getVRDisplays(ScriptState*, Navigator&);
     ScriptPromise getVRDisplays(ScriptState*);
 
+    static bool allowedToUseVR(const Frame*);
+
     VRController* controller();
     Document* document();
 
     DECLARE_VIRTUAL_TRACE();
 
 private:
     friend class VRDisplay;
     friend class VRGetDevicesCallback;
 
     explicit NavigatorVR(LocalFrame*);
 
     static const char* supplementName();
 
     void fireVRDisplayPresentChange(VRDisplay*);
 
     Member<VRController> m_controller;
 };
 
 } // namespace blink
 
 #endif // NavigatorVR_h