PlzNavigate: Pass the encoded resource transfer size to the renderer.

content/browser/streams/stream_url_request_job.h

 // Copyright (c) 2013 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_STREAMS_STREAM_URL_REQUEST_JOB_H_
 #define CONTENT_BROWSER_STREAMS_STREAM_URL_REQUEST_JOB_H_
 
 #include "base/macros.h"
 #include "content/browser/streams/stream_read_observer.h"
 #include "content/common/content_export.h"
@@ skipping 16 matching lines @@
   // StreamObserver methods.
   void OnDataAvailable(Stream* stream) override;
 
   // net::URLRequestJob methods.
   void Start() override;
   void Kill() override;
   int ReadRawData(net::IOBuffer* buf, int buf_size) override;
   bool GetMimeType(std::string* mime_type) const override;
   void GetResponseInfo(net::HttpResponseInfo* info) override;
   int GetResponseCode() const override;
+  int64_t GetTotalReceivedBytes() const override;
 
  protected:
   ~StreamURLRequestJob() override;
 
  private:
   void DidStart();
   void NotifyFailure(int);
   void HeadersCompleted(net::HttpStatusCode status_code);
   void ClearStream();
 
   scoped_refptr<content::Stream> stream_;
   bool headers_set_;
   scoped_refptr<net::IOBuffer> pending_buffer_;
   int pending_buffer_size_;
   std::unique_ptr<net::HttpResponseInfo> response_info_;
 
+  // Total bytes received for this job.
   int total_bytes_read_;
   int max_range_;
   bool request_failed_;
   int error_code_;  // Only set if request_failed_.
 
   base::WeakPtrFactory<StreamURLRequestJob> weak_factory_;
 
   DISALLOW_COPY_AND_ASSIGN(StreamURLRequestJob);
 };
 
 }  // namespace content
 
 #endif  // CONTENT_BROWSER_STREAMS_STREAM_URL_REQUEST_JOB_H_