Implement the infrastructure of creating WorkerFetchContext in worker global scope.

third_party/WebKit/public/web/WebSharedWorkerClient.h

 /*
  * Copyright (C) 2009 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 25 matching lines @@
 
 namespace blink {
 
 class WebApplicationCacheHost;
 class WebApplicationCacheHostClient;
 class WebNotificationPresenter;
 class WebSecurityOrigin;
 class WebServiceWorkerNetworkProvider;
 class WebString;
 class WebWorkerContentSettingsClientProxy;
+class WebWorkerFetchContext;
 
 // Provides an interface back to the in-page script object for a worker.
 // All functions are expected to be called back on the thread that created
 // the Worker object, unless noted.
 // An instance of this class must outlive or must have the identical lifetime
 // as WebSharedWorker (i.e. must be kept alive until workerScriptLoadFailed()
 // or workerContextDestroyed() is called).
 class WebSharedWorkerClient {
  public:
   virtual void CountFeature(uint32_t) = 0;
@@ skipping 30 matching lines @@
   }
 
   virtual void SendDevToolsMessage(int session_id,
                                    int call_id,
                                    const WebString& message,
                                    const WebString& state) {}
   virtual WebDevToolsAgentClient::WebKitClientMessageLoop*
   CreateDevToolsMessageLoop() {
     return nullptr;
   }
+
+  // Returns a new WebWorkerFetchContext for the shared worker. Ownership of the
+  // returned object is transferred to the caller. This is used only when
+  // off-main-thread-fetch is enabled.
+  virtual WebWorkerFetchContext* CreateWorkerFetchContext() { return nullptr; }

[kinuko, 2017/04/20 04:08:14]

ditto (unique_ptr)

[nhiroki, 2017/04/20 04:16:07]

How about returning std::unique_ptr<WebWorkerFetchContext>?

[horo, 2017/04/20 08:35:43]

Done.

 };
 
 }  // namespace blink
 
 #endif