[PushMessaging] Use appopriate type parameters for WebCallbacks (1/3).

Source/modules/push_messaging/PushSubscriptionCallbacks.h

Index: Source/modules/push_messaging/PushSubscriptionCallbacks.h
diff --git a/Source/modules/push_messaging/PushSubscriptionCallbacks.h b/Source/modules/push_messaging/PushSubscriptionCallbacks.h
index 55d00da7edd09fbd8fae569d7a10d8cb13e0cb17..c9244875b16d48ab822bc7a6a498f9223c54b293 100644
--- a/Source/modules/push_messaging/PushSubscriptionCallbacks.h
+++ b/Source/modules/push_messaging/PushSubscriptionCallbacks.h
@@ -6,7 +6,7 @@
 #define PushSubscriptionCallbacks_h
 
 #include "platform/heap/Handle.h"
-#include "public/platform/WebCallbacks.h"
+#include "public/platform/modules/push_messaging/WebPushProvider.h"
 #include "wtf/Noncopyable.h"
 
 namespace blink {
@@ -20,14 +20,14 @@ struct WebPushSubscription;
 // that will resolve the underlying promise depending on the result passed to
 // the callback. It takes a ServiceWorkerRegistration in its constructor and
 // will pass it to the PushSubscription.
-class PushSubscriptionCallbacks final : public WebCallbacks<WebPushSubscription*, WebPushError*> {
+class PushSubscriptionCallbacks final : public WebPushSubscriptionCallbacks {
     WTF_MAKE_NONCOPYABLE(PushSubscriptionCallbacks);
 public:
     PushSubscriptionCallbacks(ScriptPromiseResolver*, ServiceWorkerRegistration*);
     ~PushSubscriptionCallbacks() override;
 
-    void onSuccess(WebPushSubscription*) override;
-    void onError(WebPushError*) override;
+    void onSuccess(WebPassOwnPtr<WebPushSubscription>) override;
+    void onError(const WebPushError&) override;
 
 private:
     Persistent<ScriptPromiseResolver> m_resolver;