Calculate the size of all cache entries between two points in time.

net/disk_cache/simple/simple_index.h

 // Copyright (c) 2013 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 NET_DISK_CACHE_SIMPLE_SIMPLE_INDEX_H_
 #define NET_DISK_CACHE_SIMPLE_SIMPLE_INDEX_H_
 
 #include <stdint.h>
 
 #include <list>
@@ skipping 137 matching lines @@
   // Returns the list of all entries key hash.
   std::unique_ptr<HashList> GetAllHashes();
 
   // Returns number of indexed entries.
   int32_t GetEntryCount() const;
 
   // Returns the size of the entire cache in bytes. Can only be called after the
   // index has been initialized.
   uint64_t GetCacheSize() const;
 
+  // Returns the size of the cache entries accessed between |initial_time| and
+  // |end_time| in bytes. Can only be called after the index has been
+  // initialized.
+  uint64_t GetCacheSizeBetween(const base::Time initial_time,
+                               const base::Time end_time) const;
+
   // Returns whether the index has been initialized yet.
   bool initialized() const { return initialized_; }
 
   IndexInitMethod init_method() const { return init_method_; }
 
  private:
   friend class SimpleIndexTest;
   FRIEND_TEST_ALL_PREFIXES(SimpleIndexTest, IndexSizeCorrectOnMerge);
   FRIEND_TEST_ALL_PREFIXES(SimpleIndexTest, DiskWriteQueued);
   FRIEND_TEST_ALL_PREFIXES(SimpleIndexTest, DiskWriteExecuted);
@@ skipping 57 matching lines @@
 
   // Set to true when the app is on the background. When the app is in the
   // background we can write the index much more frequently, to insure fresh
   // index on next startup.
   bool app_on_background_;
 };
 
 }  // namespace disk_cache
 
 #endif  // NET_DISK_CACHE_SIMPLE_SIMPLE_INDEX_H_