Absolute Device Orientation API: blink implementation.

third_party/WebKit/Source/modules/device_orientation/DeviceOrientationDispatcher.h

 /*
  * Copyright (C) 2013 Google Inc. All rights reserved.
  *
  * Redistribution and use in source and binary forms, with or without
  * modification, are permitted provided that the following conditions are
  * met:
  *
  *     * Redistributions of source code must retain the above copyright
  * notice, this list of conditions and the following disclaimer.
  *     * Redistributions in binary form must reproduce the above
@@ skipping 27 matching lines @@
 
 namespace blink {
 
 class DeviceOrientationData;
 class WebDeviceOrientationData;
 
 // This class listens to device orientation data and notifies all registered controllers.
 class DeviceOrientationDispatcher final : public GarbageCollectedFinalized<DeviceOrientationDispatcher>, public PlatformEventDispatcher, public WebDeviceOrientationListener {
     USING_GARBAGE_COLLECTED_MIXIN(DeviceOrientationDispatcher);
 public:
-    static DeviceOrientationDispatcher& instance();
+    template<bool absolute = false> static DeviceOrientationDispatcher& instance();
     ~DeviceOrientationDispatcher() override;
 
     // Note that the returned object is owned by this class.
     // FIXME: make the return value const, see crbug.com/233174.
     DeviceOrientationData* latestDeviceOrientationData();
 
     // Inherited from WebDeviceOrientationListener.
     void didChangeDeviceOrientation(const WebDeviceOrientationData&) override;
 
     DECLARE_VIRTUAL_TRACE();
 
 private:
-    DeviceOrientationDispatcher();
+    explicit DeviceOrientationDispatcher(bool absolute);
 
     // Inherited from PlatformEventDispatcher.
     void startListening() override;
     void stopListening() override;
 
+    const bool m_absolute;
     Member<DeviceOrientationData> m_lastDeviceOrientationData;
 };
 
 } // namespace blink
 
 #endif // DeviceOrientationDispatcher_h