predictors: Track whether resources have validators, and require validation.

chrome/browser/predictors/resource_prefetch_predictor_tables.h

 // 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.
 
 #ifndef CHROME_BROWSER_PREDICTORS_RESOURCE_PREFETCH_PREDICTOR_TABLES_H_
 #define CHROME_BROWSER_PREDICTORS_RESOURCE_PREFETCH_PREDICTOR_TABLES_H_
 
 #include <stddef.h>
 
 #include <map>
@@ skipping 30 matching lines @@
   struct ResourceRow {
     ResourceRow();
     ResourceRow(const ResourceRow& other);
     ResourceRow(const std::string& main_frame_url,
                 const std::string& resource_url,
                 content::ResourceType resource_type,
                 int number_of_hits,
                 int number_of_misses,
                 int consecutive_misses,
                 double average_position,
-                net::RequestPriority priority);
+                net::RequestPriority priority,
+                bool has_validators,
+                bool always_revalidate);
     void UpdateScore();
     bool operator==(const ResourceRow& rhs) const;
 
     // Stores the host for host based data, main frame Url for the Url based
     // data. This field is cleared for efficiency reasons and the code outside
     // this class should not assume it is set.
     std::string primary_key;
 
     GURL resource_url;
     content::ResourceType resource_type;
     size_t number_of_hits;
     size_t number_of_misses;
     size_t consecutive_misses;
     double average_position;
     net::RequestPriority priority;
+    bool has_validators;
+    bool always_revalidate;
 
     // Not stored.
     float score;
   };
   typedef std::vector<ResourceRow> ResourceRows;
 
   // Sorts the ResourceRows by score, descending.
   struct ResourceRowSorter {
     bool operator()(const ResourceRow& x, const ResourceRow& y) const;
   };
@@ skipping 81 matching lines @@
   sql::Statement* GetHostResourceUpdateStatement();
   sql::Statement* GetHostMetadataDeleteStatement();
   sql::Statement* GetHostMetadataUpdateStatement();
 
   DISALLOW_COPY_AND_ASSIGN(ResourcePrefetchPredictorTables);
 };
 
 }  // namespace predictors
 
 #endif  // CHROME_BROWSER_PREDICTORS_RESOURCE_PREFETCH_PREDICTOR_TABLES_H_