Implement the infrastructure of creating WorkerFetchContext in worker global scope.

content/renderer/renderer_blink_platform_impl.h

 // Copyright (c) 2012 The Chromium Authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 #ifndef CONTENT_RENDERER_RENDERER_BLINK_PLATFORM_IMPL_H_
 #define CONTENT_RENDERER_RENDERER_BLINK_PLATFORM_IMPL_H_
 
 #include <stddef.h>
 #include <stdint.h>
 
@@ skipping 83 matching lines @@
                      int64_t,
                      const char*,
                      size_t) override;
   void CacheMetadataInCacheStorage(
       const blink::WebURL&,
       int64_t,
       const char*,
       size_t,
       const blink::WebSecurityOrigin& cacheStorageOrigin,
       const blink::WebString& cacheStorageCacheName) override;
+  std::unique_ptr<blink::WebWorkerFetchContextInfo>
+  CreateWorkerFetchContextInfo() override;
   blink::WebString DefaultLocale() override;
   void SuddenTerminationChanged(bool enabled) override;
   blink::WebStorageNamespace* CreateLocalStorageNamespace() override;
   blink::Platform::FileHandle DatabaseOpenFile(
       const blink::WebString& vfs_file_name,
       int desired_flags) override;
   int DatabaseDeleteFile(const blink::WebString& vfs_file_name,
                          bool sync_dir) override;
   long DatabaseGetFileAttributes(
       const blink::WebString& vfs_file_name) override;
@@ skipping 192 matching lines @@
 
   // Only used when network service is enabled.
   mojom::URLLoaderFactoryPtr network_service_url_loader_factory_;
 
   DISALLOW_COPY_AND_ASSIGN(RendererBlinkPlatformImpl);
 };
 
 }  // namespace content
 
 #endif  // CONTENT_RENDERER_RENDERER_BLINK_PLATFORM_IMPL_H_