Use union type for NavigatorBeacon.sendBeacon()'s data argument

Source/modules/beacon/NavigatorBeacon.h

Index: Source/modules/beacon/NavigatorBeacon.h
diff --git a/Source/modules/beacon/NavigatorBeacon.h b/Source/modules/beacon/NavigatorBeacon.h
index c1ded40e634724c2eaa9dba93a9276523394e9f0..d06c9ac0c641d219ba867b1fd67c621a9138c2fb 100644
--- a/Source/modules/beacon/NavigatorBeacon.h
+++ b/Source/modules/beacon/NavigatorBeacon.h
@@ -17,27 +17,20 @@ class DOMFormData;
 class ExceptionState;
 class ExecutionContext;
 class KURL;
+class ArrayBufferViewOrBlobOrStringOrFormData;
 
 class NavigatorBeacon final : public NoBaseWillBeGarbageCollected<NavigatorBeacon>, public WillBeHeapSupplement<Navigator> {
     WILL_BE_USING_GARBAGE_COLLECTED_MIXIN(NavigatorBeacon);
 public:
     static NavigatorBeacon& from(Navigator&);
 
-    static bool sendBeacon(ExecutionContext*, Navigator&, const String&, const String&, ExceptionState&);
-    static bool sendBeacon(ExecutionContext*, Navigator&, const String&, PassRefPtr<DOMArrayBufferView>, ExceptionState&);
-    static bool sendBeacon(ExecutionContext*, Navigator&, const String&, Blob*, ExceptionState&);
-    static bool sendBeacon(ExecutionContext*, Navigator&, const String&, PassRefPtrWillBeRawPtr<DOMFormData>, ExceptionState&);
+    static bool sendBeacon(ExecutionContext*, Navigator&, const String&, const ArrayBufferViewOrBlobOrStringOrFormData&, ExceptionState&);
 
 private:
     explicit NavigatorBeacon(Navigator&);
 
     static const char* supplementName();
 
-    bool sendBeacon(ExecutionContext*, const String&, const String&, ExceptionState&);
-    bool sendBeacon(ExecutionContext*, const String&, PassRefPtr<DOMArrayBufferView>, ExceptionState&);
-    bool sendBeacon(ExecutionContext*, const String&, Blob*, ExceptionState&);
-    bool sendBeacon(ExecutionContext*, const String&, PassRefPtrWillBeRawPtr<DOMFormData>, ExceptionState&);
-
     bool canSendBeacon(ExecutionContext*, const KURL&, ExceptionState&);
     int maxAllowance() const;
     bool beaconResult(ExecutionContext*, bool allowed, int sentBytes);