Use mojo for Chrome Loading, Part 1

content/browser/loader/resource_loader.h

Index: content/browser/loader/resource_loader.h
diff --git a/content/browser/loader/resource_loader.h b/content/browser/loader/resource_loader.h
index 976111a7408f595d7fee3eb19187a6c3d202493b..a9d826a84fd14759fe5ffd94232649b93f159a4f 100644
--- a/content/browser/loader/resource_loader.h
+++ b/content/browser/loader/resource_loader.h
@@ -14,6 +14,7 @@
 #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"
@@ -39,6 +40,12 @@ class CONTENT_EXPORT ResourceLoader : public net::URLRequest::Delegate,
   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;
 
@@ -63,6 +70,8 @@ class CONTENT_EXPORT ResourceLoader : public net::URLRequest::Delegate,
     return transferring_response_.get();
   }
 
+  mojom::URLLoaderClient* client() const { return mojo_loader_client_.get(); }
+
  private:
   // net::URLRequest::Delegate implementation:
   void OnReceivedRedirect(net::URLRequest* request,
@@ -140,6 +149,8 @@ class CONTENT_EXPORT ResourceLoader : public net::URLRequest::Delegate,
   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_;