Use mojo for Chrome Loading, Part 1

content/browser/loader/resource_loader.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_BROWSER_LOADER_RESOURCE_LOADER_H_
 #define CONTENT_BROWSER_LOADER_RESOURCE_LOADER_H_
 
 #include <memory>
 
 #include "base/macros.h"
 #include "base/memory/weak_ptr.h"
 #include "base/timer/timer.h"
 #include "content/browser/loader/resource_handler.h"
 #include "content/browser/ssl/ssl_client_auth_handler.h"
 #include "content/browser/ssl/ssl_error_handler.h"
 #include "content/common/content_export.h"
+#include "content/common/url_loader.mojom.h"
 #include "content/public/browser/resource_controller.h"
 #include "content/public/common/signed_certificate_timestamp_id_and_status.h"
 #include "net/url_request/url_request.h"
 
 namespace net {
 class X509Certificate;
 }
 
 namespace content {
 class CertStore;
 class ResourceDispatcherHostLoginDelegate;
 class ResourceLoaderDelegate;
 class ResourceRequestInfoImpl;
 
 // This class is responsible for driving the URLRequest (i.e., calling Start,
 // Read, and servicing events).  It has a ResourceHandler, which is typically a
 // chain of ResourceHandlers, and is the ResourceController for its handler.
 class CONTENT_EXPORT ResourceLoader : public net::URLRequest::Delegate,
                                       public SSLErrorHandler::Delegate,
                                       public SSLClientAuthHandler::Delegate,
                                       public ResourceController {
  public:
   ResourceLoader(std::unique_ptr<net::URLRequest> request,
                  std::unique_ptr<ResourceHandler> handler,
                  CertStore* cert_store,
+                 std::unique_ptr<mojom::URLLoader> mojo_loader,
+                 mojom::URLLoaderClientPtr mojo_loader_client,
+                 ResourceLoaderDelegate* delegate);
+  ResourceLoader(std::unique_ptr<net::URLRequest> request,
+                 std::unique_ptr<ResourceHandler> handler,
+                 CertStore* cert_store,
                  ResourceLoaderDelegate* delegate);
   ~ResourceLoader() override;
 
   void StartRequest();
   void CancelRequest(bool from_renderer);
 
   bool is_transferring() const { return is_transferring_; }
   void MarkAsTransferring(const scoped_refptr<ResourceResponse>& response);
   void CompleteTransfer();
 
   net::URLRequest* request() { return request_.get(); }
   ResourceRequestInfoImpl* GetRequestInfo();
 
   void ClearLoginDelegate();
 
   // Returns a pointer to the ResourceResponse for a request that is
   // being transferred to a new consumer. The response is valid between
   // the time that the request is marked as transferring via
   // MarkAsTransferring() and the time that the transfer is completed
   // via CompleteTransfer().
   ResourceResponse* transferring_response() {
     return transferring_response_.get();
   }
 
+  mojom::URLLoaderClient* client() const { return mojo_loader_client_.get(); }
+
  private:
   // net::URLRequest::Delegate implementation:
   void OnReceivedRedirect(net::URLRequest* request,
                           const net::RedirectInfo& redirect_info,
                           bool* defer) override;
   void OnAuthRequired(net::URLRequest* request,
                       net::AuthChallengeInfo* info) override;
   void OnCertificateRequested(net::URLRequest* request,
                               net::SSLCertRequestInfo* info) override;
   void OnSSLCertificateError(net::URLRequest* request,
@@ skipping 57 matching lines @@
     DEFERRED_REDIRECT,
     DEFERRED_READ,
     DEFERRED_RESPONSE_COMPLETE,
     DEFERRED_FINISH
   };
   DeferredStage deferred_stage_;
 
   std::unique_ptr<net::URLRequest> request_;
   std::unique_ptr<ResourceHandler> handler_;
   ResourceLoaderDelegate* delegate_;
+  std::unique_ptr<mojom::URLLoader> mojo_loader_;
+  mojom::URLLoaderClientPtr mojo_loader_client_;
 
   scoped_refptr<ResourceDispatcherHostLoginDelegate> login_delegate_;
   std::unique_ptr<SSLClientAuthHandler> ssl_client_auth_handler_;
 
   base::TimeTicks read_deferral_start_time_;
 
   // Indicates that we are in a state of being transferred to a new downstream
   // consumer.  We are waiting for a notification to complete the transfer, at
   // which point we'll receive a new ResourceHandler.
   bool is_transferring_;
@@ skipping 15 matching lines @@
   CertStore* cert_store_;
 
   base::WeakPtrFactory<ResourceLoader> weak_ptr_factory_;
 
   DISALLOW_COPY_AND_ASSIGN(ResourceLoader);
 };
 
 }  // namespace content
 
 #endif  // CONTENT_BROWSER_LOADER_RESOURCE_LOADER_H_