predictors: Remove resources marked as unused.

chrome/browser/predictors/resource_prefetch_predictor.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_H_
 #define CHROME_BROWSER_PREDICTORS_RESOURCE_PREFETCH_PREDICTOR_H_
 
 #include <stddef.h>
 
 #include <map>
@@ skipping 44 matching lines @@
 constexpr char kResourcePrefetchPredictorPrefetchHitsCountCached[] =
     "ResourcePrefetchPredictor.PrefetchHitsCount.Cached";
 constexpr char kResourcePrefetchPredictorPrefetchHitsCountNotCached[] =
     "ResourcePrefetchPredictor.PrefetchHitsCount.NotCached";
 constexpr char kResourcePrefetchPredictorPrefetchHitsSize[] =
     "ResourcePrefetchPredictor.PrefetchHitsSizeKB";
 constexpr char kResourcePrefetchPredictorPrefetchMissesSize[] =
     "ResourcePrefetchPredictor.PrefetchMissesSizeKB";
 constexpr char kResourcePrefetchPredictorRedirectStatusHistogram[] =
     "ResourcePrefetchPredictor.RedirectStatus";
+
+const uint32_t kUnusedRemovedExperiment = 0xf7f77166;
 }  // namespace internal
 
 class TestObserver;
 class ResourcePrefetcherManager;
 
 // Contains logic for learning what can be prefetched and for kicking off
 // speculative prefetching.
 // - The class is a profile keyed service owned by the profile.
 // - All the non-static methods of this class need to be called on the UI
 //   thread.
@@ skipping 194 matching lines @@
   FRIEND_TEST_ALL_PREFIXES(ResourcePrefetchPredictorTest, NavigationUrlInDB);
   FRIEND_TEST_ALL_PREFIXES(ResourcePrefetchPredictorTest, NavigationUrlNotInDB);
   FRIEND_TEST_ALL_PREFIXES(ResourcePrefetchPredictorTest,
                            NavigationUrlNotInDBAndDBFull);
   FRIEND_TEST_ALL_PREFIXES(ResourcePrefetchPredictorTest, RedirectUrlNotInDB);
   FRIEND_TEST_ALL_PREFIXES(ResourcePrefetchPredictorTest, RedirectUrlInDB);
   FRIEND_TEST_ALL_PREFIXES(ResourcePrefetchPredictorTest, ManifestHostNotInDB);
   FRIEND_TEST_ALL_PREFIXES(ResourcePrefetchPredictorTest, ManifestHostInDB);
   FRIEND_TEST_ALL_PREFIXES(ResourcePrefetchPredictorTest,
                            ManifestHostNotInDBAndDBFull);
+  FRIEND_TEST_ALL_PREFIXES(ResourcePrefetchPredictorTest,
+                           ManifestUnusedRemoved);
   FRIEND_TEST_ALL_PREFIXES(ResourcePrefetchPredictorTest, OnMainFrameRequest);
   FRIEND_TEST_ALL_PREFIXES(ResourcePrefetchPredictorTest, OnMainFrameRedirect);
   FRIEND_TEST_ALL_PREFIXES(ResourcePrefetchPredictorTest,
                            OnSubresourceResponse);
   FRIEND_TEST_ALL_PREFIXES(ResourcePrefetchPredictorTest, GetCorrectPLT);
   FRIEND_TEST_ALL_PREFIXES(ResourcePrefetchPredictorTest, HandledResourceTypes);
   FRIEND_TEST_ALL_PREFIXES(ResourcePrefetchPredictorTest,
                            PopulatePrefetcherRequest);
   FRIEND_TEST_ALL_PREFIXES(ResourcePrefetchPredictorTest, GetRedirectEndpoint);
   FRIEND_TEST_ALL_PREFIXES(ResourcePrefetchPredictorTest, GetPrefetchData);
@@ skipping 139 matching lines @@
 
   // history::HistoryServiceObserver:
   void OnURLsDeleted(history::HistoryService* history_service,
                      bool all_history,
                      bool expired,
                      const history::URLRows& deleted_rows,
                      const std::set<GURL>& favicon_urls) override;
   void OnHistoryServiceLoaded(
       history::HistoryService* history_service) override;
 
+  // Updates list of resources in the |data_map| for the |key| according to the
+  // |manifest|.
+  void UpdatePrefetchDataByManifest(const std::string& key,
+                                    PrefetchKeyType key_type,
+                                    PrefetchDataMap* data_map,
+                                    const precache::PrecacheManifest& manifest);
+
   // Used to connect to HistoryService or register for service loaded
   // notificatioan.
   void ConnectToHistoryService();
 
   // Used for testing to inject mock tables.
   void set_mock_tables(scoped_refptr<ResourcePrefetchPredictorTables> tables) {
     tables_ = tables;
   }
 
   Profile* const profile_;
@@ skipping 50 matching lines @@
 
  private:
   ResourcePrefetchPredictor* predictor_;
 
   DISALLOW_COPY_AND_ASSIGN(TestObserver);
 };
 
 }  // namespace predictors
 
 #endif  // CHROME_BROWSER_PREDICTORS_RESOURCE_PREFETCH_PREDICTOR_H_