Add metrics to track HTTP/0.9 usage for main frames and subresources

net/http/http_stream_parser.cc

 // 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.
 
 #include "net/http/http_stream_parser.h"
 
 #include <utility>
 
 #include "base/bind.h"
 #include "base/compiler_specific.h"
@@ skipping 982 matching lines @@
   }
 
   // Check for multiple Content-Disposition or Location headers.  If they exist,
   // it's also a potential response smuggling attack.
   if (HeadersContainMultipleCopiesOfField(*headers, "Content-Disposition"))
     return ERR_RESPONSE_HEADERS_MULTIPLE_CONTENT_DISPOSITION;
   if (HeadersContainMultipleCopiesOfField(*headers, "Location"))
     return ERR_RESPONSE_HEADERS_MULTIPLE_LOCATION;
 
   response_->headers = headers;
-  response_->connection_info = HttpResponseInfo::CONNECTION_INFO_HTTP1;
+  if (headers->GetHttpVersion() == HttpVersion(0, 9)) {
+    response_->connection_info = HttpResponseInfo::CONNECTION_INFO_HTTP0_9;
+  } else if (headers->GetHttpVersion() == HttpVersion(1, 0)) {
+    response_->connection_info = HttpResponseInfo::CONNECTION_INFO_HTTP1_0;
+  } else if (headers->GetHttpVersion() == HttpVersion(1, 1)) {
+    response_->connection_info = HttpResponseInfo::CONNECTION_INFO_HTTP1_1;
+  }
   response_->vary_data.Init(*request_, *response_->headers);
   DVLOG(1) << __FUNCTION__ << "()"
            << " content_length = \"" << response_->headers->GetContentLength()
            << "\n\""
            << " headers = \"" << GetResponseHeaderLines(*response_->headers)
            << "\"";
   return OK;
 }
 
 void HttpStreamParser::CalculateResponseBodySize() {
@@ skipping 168 matching lines @@
 }
 
 void HttpStreamParser::ValidateStatusLine(const std::string& status_line) {
   HttpStatusLineValidator::StatusLineStatus status =
       HttpStatusLineValidator::ValidateStatusLine(status_line);
   UMA_HISTOGRAM_ENUMERATION("Net.HttpStatusLineStatus", status,
                             HttpStatusLineValidator::STATUS_LINE_MAX);
 }
 
 }  // namespace net