Remove safe-browsing false-positive tracking.

chrome/browser/safe_browsing/safe_browsing_store.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_SAFE_BROWSING_SAFE_BROWSING_STORE_H_
 #define CHROME_BROWSER_SAFE_BROWSING_SAFE_BROWSING_STORE_H_
 
 #include <set>
 #include <vector>
 
@@ skipping 128 matching lines @@
 // in parallel.  At this time this code does the sorting internally,
 // but it might make sense to make sorting an API requirement so that
 // the storage can optimize for it.
 void SBProcessSubs(SBAddPrefixes* add_prefixes,
                    SBSubPrefixes* sub_prefixes,
                    std::vector<SBAddFullHash>* add_full_hashes,
                    std::vector<SBSubFullHash>* sub_full_hashes,
                    const base::hash_set<int32>& add_chunks_deleted,
                    const base::hash_set<int32>& sub_chunks_deleted);
 
-// Records a histogram of the number of items in |prefix_misses| which
-// are not in |add_prefixes|.
-void SBCheckPrefixMisses(const SBAddPrefixes& add_prefixes,
-                         const std::set<SBPrefix>& prefix_misses);
-
 // TODO(shess): This uses int32 rather than int because it's writing
 // specifically-sized items to files.  SBPrefix should likewise be
 // explicitly sized.
 
 // Abstract interface for storing data.
 class SafeBrowsingStore {
  public:
   SafeBrowsingStore() {}
   virtual ~SafeBrowsingStore() {}
 
@@ skipping 63 matching lines @@
   // whereas SafeBrowsingStoreFile checksums the data.  For now, this
   // distinction doesn't matter.
   virtual bool CheckValidity() = 0;
 
   // Pass the collected chunks through SBPRocessSubs() and commit to
   // permanent storage.  The resulting add prefixes and hashes will be
   // stored in |add_prefixes_result| and |add_full_hashes_result|.
   // |pending_adds| is the set of full hashes which have been received
   // since the previous update, and is provided as a convenience
   // (could be written via WriteAddHash(), but that would flush the
-  // chunk to disk).  |prefix_misses| is the set of prefixes where the
-  // |GetHash()| request returned no full hashes, used for diagnostic
-  // purposes.
+  // chunk to disk).
   virtual bool FinishUpdate(
       const std::vector<SBAddFullHash>& pending_adds,
-      const std::set<SBPrefix>& prefix_misses,
       SBAddPrefixes* add_prefixes_result,
       std::vector<SBAddFullHash>* add_full_hashes_result) = 0;
 
   // Cancel the update in process and remove any temporary disk
   // storage, leaving the original data unmodified.
   virtual bool CancelUpdate() = 0;
 
  private:
   DISALLOW_COPY_AND_ASSIGN(SafeBrowsingStore);
 };
 
 #endif  // CHROME_BROWSER_SAFE_BROWSING_SAFE_BROWSING_STORE_H_