media: Send chrome-cache: frfr on first request.

media/blink/multibuffer_data_source.cc

 // Copyright 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.
 
 #include "media/blink/multibuffer_data_source.h"
 
 #include <utility>
 
 #include "base/bind.h"
 #include "base/callback_helpers.h"
@@ skipping 385 matching lines @@
   int64_t available = reader_->Available();
   if (available < 0) {
     // A failure has occured.
     ReadOperation::Run(std::move(read_op_), kReadError);
     return;
   }
   if (available) {
     bytes_read =
         static_cast<int>(std::min<int64_t>(available, read_op_->size()));
     bytes_read = reader_->TryRead(read_op_->data(), bytes_read);
-
+    url_data_->AddBytesRead(bytes_read);
     if (bytes_read == 0 && total_bytes_ == kPositionNotSpecified) {
       // We've reached the end of the file and we didn't know the total size
       // before. Update the total size so Read()s past the end of the file will
       // fail like they would if we had known the file size at the beginning.
       total_bytes_ = reader_->Tell();
       if (total_bytes_ != kPositionNotSpecified)
         host_->SetTotalBytes(total_bytes_);
     }
 
     ReadOperation::Run(std::move(read_op_), bytes_read);
@@ skipping 197 matching lines @@
   reader_->SetPinRange(pin_backward, pin_forward);
 
   if (preload_ == METADATA) {
     reader_->SetPreload(0, 0);
   } else {
     reader_->SetPreload(preload_high, preload);
   }
 }
 
 }  // namespace media