PaymentApp: Add interfaces for implementing InvokePaymentApp().

content/renderer/service_worker/service_worker_context_client.h

Index: content/renderer/service_worker/service_worker_context_client.h
diff --git a/content/renderer/service_worker/service_worker_context_client.h b/content/renderer/service_worker/service_worker_context_client.h
index 2686e316ac8aed153985e388c6c2c446880e96ed..4bbcc3277959d1262421a02787023f871d4c7a4f 100644
--- a/content/renderer/service_worker/service_worker_context_client.h
+++ b/content/renderer/service_worker/service_worker_context_client.h
@@ -19,6 +19,7 @@
 #include "base/memory/ref_counted.h"
 #include "base/strings/string16.h"
 #include "base/time/time.h"
+#include "components/payments/payment_app.mojom.h"
 #include "content/child/webmessageportchannel_impl.h"
 #include "content/common/service_worker/service_worker_event_dispatcher.mojom.h"
 #include "content/common/service_worker/service_worker_status_code.h"
@@ -68,6 +69,9 @@ class ServiceWorkerContextClient : public blink::WebServiceWorkerContextClient,
   using SyncCallback =
       base::Callback<void(ServiceWorkerStatusCode,
                           base::Time /* dispatch_event_time */)>;
+  using PaymentRequestEventCallback =
+      base::Callback<void(ServiceWorkerStatusCode,
+                          base::Time /* dispatch_event_time */)>;
   using FetchCallback =
       base::Callback<void(ServiceWorkerStatusCode,
                           base::Time /* dispatch_event_time */)>;
@@ -224,6 +228,9 @@ class ServiceWorkerContextClient : public blink::WebServiceWorkerContextClient,
       const std::string& tag,
       blink::mojom::BackgroundSyncEventLastChance last_chance,
       const DispatchSyncEventCallback& callback) override;
+  void DispatchPaymentRequestEvent(
+      payments::mojom::PaymentAppRequestDataPtr data,
+      const DispatchPaymentRequestEventCallback& callback) override;
 
   void OnActivateEvent(int request_id);
   void OnInstallEvent(int request_id);