Implement DeviceOrientationEvent constructor.

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

Index: third_party/WebKit/Source/modules/device_orientation/DeviceOrientationData.h
diff --git a/third_party/WebKit/Source/modules/device_orientation/DeviceOrientationData.h b/third_party/WebKit/Source/modules/device_orientation/DeviceOrientationData.h
index 6372dd229ee0f8fb5381e2006aa710524b15be62..6eb7c0e52865d682723880bfd492d11f78bad1e1 100644
--- a/third_party/WebKit/Source/modules/device_orientation/DeviceOrientationData.h
+++ b/third_party/WebKit/Source/modules/device_orientation/DeviceOrientationData.h
@@ -31,6 +31,7 @@
 
 namespace blink {
 
+class DeviceOrientationEventInit;
 class WebDeviceOrientationData;
 
 class DeviceOrientationData final
@@ -41,6 +42,7 @@ class DeviceOrientationData final
                                        const Nullable<double>& beta,
                                        const Nullable<double>& gamma,
                                        bool absolute);
+  static DeviceOrientationData* create(const DeviceOrientationEventInit&);
   static DeviceOrientationData* create(const WebDeviceOrientationData&);
   DEFINE_INLINE_TRACE() {}