predictors: Add the request priority to the reource_prefetch_predictor DB.

chrome/browser/net/resource_prefetch_predictor_observer.cc

 // Copyright 2014 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 "chrome/browser/net/resource_prefetch_predictor_observer.h"
 
 #include <string>
 
 #include "base/metrics/histogram.h"
 #include "content/public/browser/browser_thread.h"
@@ skipping 54 matching lines @@
     ReportRequestStats(REQUEST_STATS_NO_RENDER_FRAME_ID_FROM_REQUEST_INFO);
     return false;
   }
 
   summary->navigation_id.render_process_id = render_process_id;
   summary->navigation_id.render_frame_id = render_frame_id;
   summary->navigation_id.main_frame_url = request->first_party_for_cookies();
   summary->navigation_id.creation_time = request->creation_time();
   summary->resource_url = request->original_url();
   summary->resource_type = info->GetResourceType();
+  summary->priority = request->priority();
   request->GetMimeType(&summary->mime_type);
   summary->was_cached = request->was_cached();
 
   // Use the mime_type to determine the resource type for subresources since
   // types such as PREFETCH, SUB_RESOURCE, etc are not useful.
   if (summary->resource_type != content::RESOURCE_TYPE_MAIN_FRAME) {
     summary->resource_type =
         ResourcePrefetchPredictor::GetResourceTypeFromMimeType(
             summary->mime_type,
             summary->resource_type);
@@ skipping 109 matching lines @@
                  summary));
 
   ReportRequestStats(REQUEST_STATS_TOTAL_PROCESSED_RESPONSES);
   if (request_info &&
       request_info->GetResourceType() == content::RESOURCE_TYPE_MAIN_FRAME) {
     ReportMainFrameRequestStats(MAIN_FRAME_REQUEST_STATS_PROCESSED_RESPONSES);
   }
 }
 
 }  // namespace chrome_browser_net