Index: content/browser/loader/url_loader_request_handler.h |
diff --git a/content/browser/loader/url_loader_request_handler.h b/content/browser/loader/url_loader_request_handler.h |
new file mode 100644 |
index 0000000000000000000000000000000000000000..f72cc2a88e5d2cd45ef1d7ef6356387276b4cd1f |
--- /dev/null |
+++ b/content/browser/loader/url_loader_request_handler.h |
@@ -0,0 +1,46 @@ |
+// Copyright 2017 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_BROWSER_LOADER_URL_LOADER_REQUEST_HANDLER_H_ |
+#define CONTENT_BROWSER_LOADER_URL_LOADER_REQUEST_HANDLER_H_ |
+ |
+#include "base/callback_forward.h" |
+#include "base/macros.h" |
+#include "content/common/url_loader_factory.mojom.h" |
+ |
+namespace content { |
+ |
+class ResourceContext; |
+struct ResourceRequest; |
+ |
+using LoaderFactoryCallback = |
+ base::OnceCallback<void(mojom::URLLoaderFactory*)>; |
+ |
+// An instance of this class is a per-request object and kept around during |
+// the lifetime of a request (including multiple redirect legs) on IO thread. |
+class CONTENT_EXPORT URLLoaderRequestHandler { |
+ public: |
+ URLLoaderRequestHandler() = default; |
+ virtual ~URLLoaderRequestHandler() = default; |
+ |
+ // Calls |callback| with non-null factory if this handler can handle |
+ // the request, calls it with nullptr otherwise. |
+ // Some implementation notes: |
+ // 1) The returned pointer needs to be valid only until a single |
+ // CreateLoaderAndStart call is made, and it is okay to do CHECK(false) for |
+ // any subsequent calls. |
+ // 2) The implementor is not supposed to set up and return URLLoaderFactory |
+ // until it finds out that the handler is really going to handle the |
+ // request. (For example ServiceWorker's request handler would not need to |
+ // call the callback until it gets response from SW, and it may still |
+ // call the callback with nullptr if it turns out that it needs to fallback |
+ // to the network.) |
+ virtual void MaybeCreateLoaderFactory(const ResourceRequest& resource_request, |
+ ResourceContext* resource_context, |
+ LoaderFactoryCallback callback) = 0; |
+}; |
+ |
+} // namespace content |
+ |
+#endif // CONTENT_BROWSER_LOADER_URL_LOADER_REQUEST_HANDLER_H_ |