Add a PrefetchList to Prerender Local Predictor, to emulate how effective

chrome/browser/prerender/prerender_local_predictor.h

 // 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.
 
 #ifndef CHROME_BROWSER_PRERENDER_PRERENDER_LOCAL_PREDICTOR_H_
 #define CHROME_BROWSER_PRERENDER_PRERENDER_LOCAL_PREDICTOR_H_
 
 #include <map>
 #include <vector>
 
@@ skipping 28 matching lines @@
 
 // PrerenderLocalPredictor maintains local browsing history to make prerender
 // predictions.
 // At this point, the class is not actually creating prerenders, but just
 // recording timing stats about the effect prerendering would have.
 class PrerenderLocalPredictor : public history::VisitDatabaseObserver,
                                 public net::URLFetcherDelegate {
  public:
   struct LocalPredictorURLInfo;
   struct CandidatePrerenderInfo;
+  // A class simulating a set of URLs prefetched, for statistical purposes.
+  class PrefetchList;
   enum Event {
     EVENT_CONSTRUCTED = 0,
     EVENT_INIT_SCHEDULED = 1,
     EVENT_INIT_STARTED = 2,
     EVENT_INIT_FAILED_NO_HISTORY = 3,
     EVENT_INIT_SUCCEEDED = 4,
     EVENT_ADD_VISIT = 5,
     EVENT_ADD_VISIT_INITIALIZED = 6,
     EVENT_ADD_VISIT_PRERENDER_IDENTIFIED = 7,
     EVENT_ADD_VISIT_RELEVANT_TRANSITION = 8,
@@ skipping 71 matching lines @@
     EVENT_NAMESPACE_MISMATCH_MERGE_RESULT_NOT_MERGEABLE = 80,
     EVENT_NAMESPACE_MISMATCH_MERGE_RESULT_MERGEABLE = 81,
     EVENT_INIT_FAILED_UNENCRYPTED_SYNC_NOT_ENABLED = 82,
     EVENT_CONTINUE_PRERENDER_CHECK_EXAMINE_NEXT_URL_NOT_SKIPPED = 83,
     EVENT_PRERENDER_SERIVCE_RETURNED_HINTING_CANDIDATES = 84,
     EVENT_NAMESPACE_MISMATCH_MERGE_RESULT_NAMESPACE_NOT_ALIAS = 85,
     EVENT_TAB_HELPER_URL_SEEN_MATCH_ENTRY = 86,
     EVENT_TAB_HELPER_URL_SEEN_MATCH_BROWSER_NAVIGATE = 87,
     EVENT_TAB_HELPER_URL_SEEN_NAMESPACE_MATCH_ENTRY = 88,
     EVENT_TAB_HELPER_URL_SEEN_NAMESPACE_MATCH_BROWSER_NAVIGATE = 89,
+    EVENT_PREFETCH_LIST_ADDED = 90,
+    EVENT_PREFETCH_LIST_SEEN_TABCONTENTS = 91,
+    EVENT_PREFETCH_LIST_SEEN_HISTORY = 92,
     EVENT_MAX_VALUE
   };
 
   // A PrerenderLocalPredictor is owned by the PrerenderManager specified
   // in the constructor.  It will be destoryed at the time its owning
   // PrerenderManager is destroyed.
   explicit PrerenderLocalPredictor(PrerenderManager* prerender_manager);
   virtual ~PrerenderLocalPredictor();
 
   void Shutdown();
@@ skipping 31 matching lines @@
 
   // Returns an element of issued_prerenders_, which should be replaced
   // by a new prerender of the priority indicated, or NULL, if the priority
   // is too low (or if the URL requested is already prerendering).
   PrerenderProperties* GetIssuedPrerenderSlotForPriority(const GURL& url,
                                                          double priority);
 
   void ContinuePrerenderCheck(scoped_ptr<CandidatePrerenderInfo> info);
   void LogCandidateURLStats(const GURL& url) const;
   void IssuePrerender(CandidatePrerenderInfo* info,
-                      LocalPredictorURLInfo* url_info,
-                      PrerenderProperties* prerender_properties);
+                      LocalPredictorURLInfo* url_info);
   void MaybeCancelURLFetcher(net::URLFetcher* fetcher);
   // Returns true if the parsed response is semantically correct and could
   // be fully applied.
   bool ApplyParsedPrerenderServiceResponse(
       base::DictionaryValue* dict,
       CandidatePrerenderInfo* info,
       bool* hinting_timed_out,
       bool* hinting_url_lookup_timed_out,
       bool* candidate_url_lookup_timed_out);
   void ProcessNamespaceMergeResult(
@@ skipping 18 matching lines @@
 
   scoped_ptr<PrerenderProperties> current_prerender_;
   scoped_ptr<PrerenderProperties> last_swapped_in_prerender_;
 
   ScopedVector<PrerenderProperties> issued_prerenders_;
 
   base::hash_set<int64> url_whitelist_;
 
   base::WeakPtrFactory<PrerenderLocalPredictor> weak_factory_;
 
+  scoped_ptr<PrefetchList> prefetch_list_;
+
   DISALLOW_COPY_AND_ASSIGN(PrerenderLocalPredictor);
 };
 
 }  // namespace prerender
 
 #endif  // CHROME_BROWSER_PRERENDER_PRERENDER_LOCAL_PREDICTOR_H_