Notify NetworkDelegate when bytes have been received over the network.

net/base/layered_network_delegate.h

 // Copyright 2014 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 NET_BASE_LAYERED_NETWORK_DELEGATE_H_
 #define NET_BASE_LAYERED_NETWORK_DELEGATE_H_
 
 #include "base/memory/scoped_ptr.h"
 #include "base/strings/string16.h"
 #include "net/base/completion_callback.h"
@@ skipping 45 matching lines @@
                      const HttpRequestHeaders& headers) final;
   int OnHeadersReceived(
       URLRequest* request,
       const CompletionCallback& callback,
       const HttpResponseHeaders* original_response_headers,
       scoped_refptr<HttpResponseHeaders>* override_response_headers,
       GURL* allowed_unsafe_redirect_url) final;
   void OnBeforeRedirect(URLRequest* request, const GURL& new_location) final;
   void OnResponseStarted(URLRequest* request) final;
   void OnRawBytesRead(const URLRequest& request, int bytes_read) final;
+  void OnNetworkBytesReceived(const URLRequest& request,
+                              int64 bytes_received) final;

[bengr, 2015/08/17 21:30:39]

Use int64_t and include <stdint.h>. See
https://code.google.com/p/chromium/codesearch#chromium/src/base/basictypes.h&...

[sclittle, 2015/08/17 23:35:13]

Done.

   void OnCompleted(URLRequest* request, bool started) final;
   void OnURLRequestDestroyed(URLRequest* request) final;
   void OnPACScriptError(int line_number, const base::string16& error) final;
   AuthRequiredResponse OnAuthRequired(URLRequest* request,
                                       const AuthChallengeInfo& auth_info,
                                       const AuthCallback& callback,
                                       AuthCredentials* credentials) final;
   bool OnCanGetCookies(const URLRequest& request,
                        const CookieList& cookie_list) final;
   bool OnCanSetCookie(const URLRequest& request,
@@ skipping 41 matching lines @@
       GURL* allowed_unsafe_redirect_url);
 
   virtual void OnBeforeRedirectInternal(URLRequest* request,
                                         const GURL& new_location);
 
   virtual void OnResponseStartedInternal(URLRequest* request);
 
   virtual void OnRawBytesReadInternal(const URLRequest& request,
                                       int bytes_read);
 
+  virtual void OnNetworkBytesReceivedInternal(const URLRequest& request,
+                                              int64 bytes_received);

[bengr, 2015/08/17 21:30:39]

What does bytes_received mean? Does it include, e.g., SPDY framing, TLS
overhead, TCP retransmits, etc?

[sclittle, 2015/08/17 23:35:13]

See comment in network_delegate.h.

+
   virtual void OnCompletedInternal(URLRequest* request, bool started);
 
   virtual void OnURLRequestDestroyedInternal(URLRequest* request);
 
   virtual void OnPACScriptErrorInternal(int line_number,
                                         const base::string16& error);
 
   virtual void OnCanGetCookiesInternal(const URLRequest& request,
                                        const CookieList& cookie_list);
 
@@ skipping 20 matching lines @@
       const GURL& target_url,
       const GURL& referrer_url) const;
 
  private:
   scoped_ptr<NetworkDelegate> nested_network_delegate_;
 };
 
 }  // namespace net
 
 #endif  // NET_BASE_LAYERED_NETWORK_DELEGATE_H_