predictors: Support fonts in resource_prefetch_predictors.

chrome/browser/predictors/resource_prefetch_predictor_tables.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/predictors/resource_prefetch_predictor_tables.h"
 
 #include <stdint.h>
 
 #include <algorithm>
 #include <memory>
@@ skipping 86 matching lines @@
           resource_url(i_resource_url),
           resource_type(i_resource_type),
           number_of_hits(i_number_of_hits),
           number_of_misses(i_number_of_misses),
           consecutive_misses(i_consecutive_misses),
           average_position(i_average_position) {
   UpdateScore();
 }
 
 void ResourcePrefetchPredictorTables::ResourceRow::UpdateScore() {
-  // The score is calculated so that when the rows are sorted, the stylesheets
-  // and scripts appear first, sorted by position(ascending) and then the rest
-  // of the resources sorted by position(ascending).
+  // The score is calculated so that when the rows are sorted, stylesheets,
+  // scripts and fonts appear first, sorted by position(ascending) and then the
+  // rest of the resources sorted by position (ascending).
   static const int kMaxResourcesPerType = 100;
   switch (resource_type) {
     case content::RESOURCE_TYPE_STYLESHEET:
     case content::RESOURCE_TYPE_SCRIPT:
+    case content::RESOURCE_TYPE_FONT_RESOURCE:
       score = (2 * kMaxResourcesPerType) - average_position;
       break;
 
     case content::RESOURCE_TYPE_IMAGE:
     default:
       score = kMaxResourcesPerType - average_position;
       break;
   }
 }
 
@@ skipping 387 matching lines @@
 
 Statement* ResourcePrefetchPredictorTables::GetHostMetadataUpdateStatement() {
   return new Statement(DB()->GetCachedStatement(
       SQL_FROM_HERE,
       base::StringPrintf(
           "INSERT INTO %s (main_page_url, last_visit_time) VALUES (?,?)",
           kHostMetadataTableName).c_str()));
 }
 
 }  // namespace predictors