Implement the infrastructure of creating WorkerFetchContext in worker global scope.

third_party/WebKit/public/web/WebFrameClient.h

 /*
  * Copyright (C) 2011, 2012 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 47 matching lines @@
 #include "public/platform/WebInsecureRequestPolicy.h"
 #include "public/platform/WebLoadingBehaviorFlag.h"
 #include "public/platform/WebPageVisibilityState.h"
 #include "public/platform/WebSecurityOrigin.h"
 #include "public/platform/WebSetSinkIdCallbacks.h"
 #include "public/platform/WebSourceLocation.h"
 #include "public/platform/WebStorageQuotaCallbacks.h"
 #include "public/platform/WebStorageQuotaType.h"
 #include "public/platform/WebURLError.h"
 #include "public/platform/WebURLRequest.h"
+#include "public/platform/WebWorkerFetchContext.h"
 #include "v8/include/v8.h"
 
 namespace blink {
 
 enum class WebTreeScopeType;
 class WebApplicationCacheHost;
 class WebApplicationCacheHostClient;
 class WebColorChooser;
 class WebColorChooserClient;
 class WebContentDecryptionModule;
@@ skipping 61 matching lines @@
 
   // May return null.
   virtual WebServiceWorkerProvider* CreateServiceWorkerProvider() { return 0; }
 
   // May return null.
   virtual WebWorkerContentSettingsClientProxy*
   CreateWorkerContentSettingsClientProxy() {
     return 0;
   }
 
+  // Returns a new WebWorkerFetchContext for a dedicated worker. Ownership of
+  // the returned object is transferred to the caller. This is used only when
+  // off-main-thread-fetch is enabled.
+  virtual std::unique_ptr<WebWorkerFetchContext> CreateWorkerFetchContext() {
+    return nullptr;
+  }
+
   // Create a new WebPopupMenu. In the "createExternalPopupMenu" form, the
   // client is responsible for rendering the contents of the popup menu.
   virtual WebExternalPopupMenu* CreateExternalPopupMenu(
       const WebPopupMenuInfo&,
       WebExternalPopupMenuClient*) {
     return 0;
   }
 
   // Services ------------------------------------------------------------
 
@@ skipping 600 matching lines @@
   // Overwrites the given URL to use an HTML5 embed if possible.
   // An empty URL is returned if the URL is not overriden.
   virtual WebURL OverrideFlashEmbedWithHTML(const WebURL& url) {
     return WebURL();
   }
 };
 
 }  // namespace blink
 
 #endif