Refactored VRService interaction and added VRServiceClient

third_party/WebKit/Source/modules/vr/VRController.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 VRController_h
 #define VRController_h
 
-#include "core/frame/LocalFrame.h"
+#include "core/dom/ContextLifecycleObserver.h"
+#include "core/dom/Document.h"
 #include "device/vr/vr_service.mojom-blink.h"
-#include "modules/ModulesExport.h"
-#include "platform/Supplementable.h"
+#include "modules/vr/VRDisplay.h"
+#include "mojo/public/cpp/bindings/binding.h"
+#include "platform/heap/Handle.h"
 #include "wtf/Deque.h"
 
 #include <memory>
 
 namespace blink {
 
+class NavigatorVR;
 class ServiceRegistry;
 class VRGetDevicesCallback;
 
-class MODULES_EXPORT VRController final
+class VRController final
     : public GarbageCollectedFinalized<VRController>
-    , public Supplement<LocalFrame> {
+    , public device::blink::VRServiceClient
+    , public ContextLifecycleObserver {
     USING_GARBAGE_COLLECTED_MIXIN(VRController);
     WTF_MAKE_NONCOPYABLE(VRController);
 public:
+    VRController(NavigatorVR*);
     virtual ~VRController();
 
-    void getDisplays(std::unique_ptr<VRGetDevicesCallback>);
-
+    // VRService.
+    void getDisplays(ScriptPromiseResolver*);
     device::blink::VRPosePtr getPose(unsigned index);
-
     void resetPose(unsigned index);
 
-    static void provideTo(LocalFrame&, ServiceRegistry*);
-    static VRController* from(LocalFrame&);
-    static const char* supplementName();
+    VRDisplay* createOrUpdateDisplay(const device::blink::VRDisplayPtr&);
+    VRDisplayVector updateDisplays(mojo::WTFArray<device::blink::VRDisplayPtr>);
+    VRDisplay* getDisplayForIndex(unsigned index);
 
     DECLARE_VIRTUAL_TRACE();
 
 private:
-    VRController(LocalFrame&, ServiceRegistry*);
-
     // Binding callbacks.
     void onGetDisplays(mojo::WTFArray<device::blink::VRDisplayPtr>);
 
+    // VRServiceClient.
+    void OnDisplayChanged(device::blink::VRDisplayPtr) override;
+
+    // ContextLifecycleObserver.
+    void contextDestroyed() override;
+
+    Member<NavigatorVR> m_navigatorVR;
+    VRDisplayVector m_displays;
+
     Deque<std::unique_ptr<VRGetDevicesCallback>> m_pendingGetDevicesCallbacks;
     device::blink::VRServicePtr m_service;
+    mojo::Binding<device::blink::VRServiceClient> m_binding;
 };
 
 } // namespace blink
 
 #endif // VRController_h