Report ERR_CONTENT_LENGTH_MISMATCH when the count of bytes received doesn't match Content-Length.

content/browser/download/download_resource_handler.cc

 // Copyright (c) 2011 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 "content/browser/download/download_resource_handler.h"
 
 #include <string>
 
 #include "base/bind.h"
 #include "base/logging.h"
@@ skipping 197 matching lines @@
     int request_id,
     const net::URLRequestStatus& status,
     const std::string& security_info) {
   VLOG(20) << __FUNCTION__ << "()" << DebugString()
            << " request_id = " << request_id
            << " status.status() = " << status.status()
            << " status.error() = " << status.error();
   net::Error error_code = net::OK;
   if (status.status() == net::URLRequestStatus::FAILED)
     error_code = static_cast<net::Error>(status.error());  // Normal case.
-  // ERR_CONNECTION_CLOSED is allowed since a number of servers in the wild
-  // advertise a larger Content-Length than the amount of bytes in the message
-  // body, and then close the connection. Other browsers - IE8, Firefox 4.0.1,
-  // and Safari 5.0.4 - treat the download as complete in this case, so we
-  // follow their lead.
-  if (error_code == net::ERR_CONNECTION_CLOSED)
+  // ERR_CONTENT_LENGTH_MISMATCH is allowed since a number of servers in the
+  // wild advertise a larger Content-Length than the amount of bytes in the
+  // message body, and then close the connection. Other browsers - IE8,
+  // Firefox 4.0.1, and Safari 5.0.4 - treat the download as complete in this
+  // case, so we follow their lead.
+  if (error_code == net::ERR_CONTENT_LENGTH_MISMATCH)
     error_code = net::OK;
   InterruptReason reason =
       ConvertNetErrorToInterruptReason(error_code,
                                        DOWNLOAD_INTERRUPT_FROM_NETWORK);
   if ((status.status() == net::URLRequestStatus::CANCELED) &&
       (status.error() == net::ERR_ABORTED)) {
     // TODO(ahendrickson) -- Find a better set of codes to use here, as
     // CANCELED/ERR_ABORTED can occur for reasons other than user cancel.
     reason = DOWNLOAD_INTERRUPT_REASON_USER_CANCELED;  // User canceled.
   }
@@ skipping 70 matching lines @@
                             " render_view_id_ = " "%d"
                             " save_info_.file_path = \"%" PRFilePath "\""
                             " }",
                             request_->url().spec().c_str(),
                             download_id_.local(),
                             global_id_.child_id,
                             global_id_.request_id,
                             render_view_id_,
                             save_info_.file_path.value().c_str());
 }