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

content/browser/cache_storage/cache_storage_cache_unittest.cc

Index: content/browser/cache_storage/cache_storage_cache_unittest.cc
diff --git a/content/browser/cache_storage/cache_storage_cache_unittest.cc b/content/browser/cache_storage/cache_storage_cache_unittest.cc
index fd27f866ad1259d6f2fc99d5cd59cead9fd9bf61..2624e7629e839f40a397ab10c3b1a71f667ff9a1 100644
--- a/content/browser/cache_storage/cache_storage_cache_unittest.cc
+++ b/content/browser/cache_storage/cache_storage_cache_unittest.cc
@@ -108,6 +108,13 @@ class DelayableBackend : public disk_cache::Backend {
       const CompletionCallback& callback) override {
     return backend_->CalculateSizeOfAllEntries(callback);
   }
+  int CalculateSizeOfEntriesBetween(
+      base::Time initial_time,
+      base::Time end_time,
+      const CompletionCallback& callback) override {
+    return backend_->CalculateSizeOfEntriesBetween(initial_time, end_time,
+                                                   callback);
+  }
   std::unique_ptr<Iterator> CreateIterator() override {
     return backend_->CreateIterator();
   }