ServiceWorker: Use mojo's data pipe for respondWith(stream)

third_party/WebKit/public/web/modules/serviceworker/WebServiceWorkerContextClient.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 21 matching lines @@
 #define WebServiceWorkerContextClient_h
 
 #include <memory>
 
 #include "public/platform/WebMessagePortChannel.h"
 #include "public/platform/WebURL.h"
 #include "public/platform/modules/serviceworker/WebServiceWorkerClientsClaimCallbacks.h"
 #include "public/platform/modules/serviceworker/WebServiceWorkerClientsInfo.h"
 #include "public/platform/modules/serviceworker/WebServiceWorkerEventResult.h"
 #include "public/platform/modules/serviceworker/WebServiceWorkerSkipWaitingCallbacks.h"
+#include "public/platform/modules/serviceworker/WebServiceWorkerStreamHandle.h"
 #include "public/web/WebDevToolsAgentClient.h"
 #include "v8/include/v8.h"
 
 namespace blink {
 
 struct WebPaymentAppResponse;
 struct WebServiceWorkerClientQueryOptions;
 class WebServiceWorkerContextProxy;
 class WebServiceWorkerNetworkProvider;
 class WebServiceWorkerProvider;
@@ skipping 108 matching lines @@
   virtual void DidHandleExtendableMessageEvent(
       int event_id,
       WebServiceWorkerEventResult result,
       double event_dispatch_time) {}
 
   // ServiceWorker specific methods. respondFetchEvent will be called after
   // FetchEvent returns a response by the ServiceWorker's script context, and
   // didHandleFetchEvent will be called after the end of FetchEvent's
   // lifecycle. When no response is provided, the browser should fallback to
   // native fetch. EventIDs are the same with the ids passed from
   // dispatchFetchEvent respectively.

[falken, 2017/04/12 08:00:16]

RespondToFetchEvent and ResponseToFetchEventWithResponse are tricky names.

suggest....

// Used when respondWith() is not called. Tells the browser to fall back to
native fetch.
RespondToFetchEventWithNoResponse()
// Responds to the fetch event with |response|.
RespondToFetchEvent()
// Responds to the fetch event with |response|, where body is
|web_stream_handle|.
RespondToFetchEventWithStreamBody()

I think |body_as_stream| or |body| is easier to understand than
|web_stream_handle|.

[shimazu, 2017/04/18 01:50:05]

Done.

   virtual void RespondToFetchEvent(int fetch_event_id,
                                    double event_dispatch_time) {}
-  virtual void RespondToFetchEvent(int fetch_event_id,
-                                   const WebServiceWorkerResponse& response,
-                                   double event_dispatch_time) {}
+  virtual void RespondToFetchEventWithResponse(
+      int fetch_event_id,
+      const WebServiceWorkerResponse& response,
+      double event_dispatch_time) {}
+  virtual void RespondToFetchEventWithResponseStream(
+      int fetch_event_id,
+      const WebServiceWorkerResponse& response,
+      WebServiceWorkerStreamHandle* web_stream_handle,
+      double event_dispatch_time) {}
   virtual void RespondToPaymentRequestEvent(
       int event_id,
       const WebPaymentAppResponse& response,
       double event_dispatch_time) {}
   virtual void DidHandleFetchEvent(int fetch_event_id,
                                    WebServiceWorkerEventResult result,
                                    double event_dispatch_time) {}
 
   // ServiceWorker specific method. Called after InstallEvent (dispatched
   // via WebServiceWorkerContextProxy) is handled by the ServiceWorker's
@@ skipping 114 matching lines @@
   // Called when the worker wants to register subscopes to handle via foreign
   // fetch. Will only be called while an install event is in progress.
   virtual void RegisterForeignFetchScopes(
       const WebVector<WebURL>& sub_scopes,
       const WebVector<WebSecurityOrigin>& origins) = 0;
 };
 
 }  // namespace blink
 
 #endif  // WebServiceWorkerContextClient_h