PaymentApp: Blink side of payment request event dispatching in service worker.

third_party/WebKit/public/web/modules/serviceworker/WebServiceWorkerContextProxy.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 26 matching lines @@
 
 #include <memory>
 
 namespace blink {
 
 class WebDataConsumerHandle;
 class WebServiceWorkerRequest;
 class WebServiceWorkerResponse;
 class WebString;
 struct WebNotificationData;
+struct WebPaymentAppRequestData;
 struct WebServiceWorkerClientInfo;
 struct WebServiceWorkerError;
 
 // A proxy interface to talk to the worker's GlobalScope implementation.
 // All methods of this class must be called on the worker thread.
 class WebServiceWorkerContextProxy {
  public:
   virtual ~WebServiceWorkerContextProxy() {}
 
   virtual void setRegistration(
@@ skipping 32 matching lines @@
   virtual bool hasFetchEventHandler() = 0;
 
   enum LastChanceOption { IsNotLastChance, IsLastChance };
 
   // Once the ServiceWorker has finished handling the sync event,
   // didHandleSyncEvent is called on the context client.
   virtual void dispatchSyncEvent(int syncEventID,
                                  const WebString& tag,
                                  LastChanceOption) = 0;
 
+  virtual void dispatchPaymentRequestEvent(int eventID,
+                                           const WebPaymentAppRequestData&) = 0;

[haraken, 2016/11/24 04:41:54]

Who calls this public method? I couldn't find it in the current code base.

Can we use mojo instead? Then we don't need to add a bunch of payment structs to
public/ APIs.

[shimazu, 2016/11/24 05:00:24]

drive by:
I'm now mojofying IPCs related to dispatching events (but it's in
content/renderer): 
https://codereview.chromium.org/2490623005/diff/40001/content/common/service_...
I think this is fine for now though we need to move the codes from
content/renderer to blink later as a part of the onion soup.

+
   virtual void onNavigationPreloadResponse(
       int fetchEventID,
       std::unique_ptr<WebServiceWorkerResponse>,
       std::unique_ptr<WebDataConsumerHandle>) = 0;
   virtual void onNavigationPreloadError(
       int fetchEventID,
       std::unique_ptr<WebServiceWorkerError>) = 0;
 };
 
 }  // namespace blink
 
 #endif  // WebServiceWorkerContextProxy_h