Precache per-resource cap should be applied on network bytes used

net/url_request/url_fetcher_delegate.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 NET_URL_REQUEST_URL_FETCHER_DELEGATE_H_
 #define NET_URL_REQUEST_URL_FETCHER_DELEGATE_H_
 
 #include <stdint.h>
 
 #include <memory>
 #include <string>
 
 #include "net/base/net_export.h"
 
 namespace net {
 
 class URLFetcher;
 
 // A delegate interface for users of URLFetcher.
 class NET_EXPORT URLFetcherDelegate {
  public:
   // This will be called when the URL has been fetched, successfully or not.
   // Use accessor methods on |source| to get the results.
   virtual void OnURLFetchComplete(const URLFetcher* source) = 0;
 
   // This will be called when some part of the response is read. |current|
   // denotes the number of bytes received up to the call, and |total| is the
   // expected total size of the response (or -1 if not determined).
+  // |current_network_bytes| denotes the number of network bytes received
+  // up to the call, excluding redirect bodies, SSL and proxy handshakes.
   virtual void OnURLFetchDownloadProgress(const URLFetcher* source,
                                           int64_t current,
-                                          int64_t total);
+                                          int64_t total,
+                                          int64_t current_network_bytes);
 
   // This will be called when uploading of POST or PUT requests proceeded.
   // |current| denotes the number of bytes sent so far, and |total| is the
   // total size of uploading data (or -1 if chunked upload is enabled).
   virtual void OnURLFetchUploadProgress(const URLFetcher* source,
                                         int64_t current,
                                         int64_t total);
 
  protected:
   virtual ~URLFetcherDelegate();
 };
 
 }  // namespace net
 
 #endif  // NET_URL_REQUEST_URL_FETCHER_DELEGATE_H_