Add a size estimation mechanism to StoragePartitionHttpCacheDataRemover.

net/disk_cache/blockfile/backend_impl_v3.cc

 // 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.
 
 #include "net/disk_cache/blockfile/backend_impl_v3.h"
 
 #include "base/bind.h"
 #include "base/bind_helpers.h"
 #include "base/files/file_path.h"
 #include "base/files/file_util.h"
@@ skipping 643 matching lines @@
       SyncEndEnumeration(iter);
       return net::OK;
     }
 
     entry->DoomImpl();
     entry->Release();
     SyncEndEnumeration(iter);  // Dooming the entry invalidates the iterator.
   }
 }
 
+int BackendImplV3::DoomEntriesBetween(base::Time initial_time,
+                                      base::Time end_time,
+                                      const CompletionCallback& callback) {
+  // TODO(msramek): Implement.
+  return net::ERR_NOT_IMPLEMENTED;
+}
+
 class BackendImplV3::IteratorImpl : public Backend::Iterator {
  public:
   explicit IteratorImpl(base::WeakPtr<InFlightBackendIO> background_queue)
       : background_queue_(background_queue), data_(NULL) {
   }
 
   int OpenNextEntry(Entry** next_entry,
                     const net::CompletionCallback& callback) override {
     if (!background_queue_)
       return net::ERR_FAILED;
@@ skipping 827 matching lines @@
                                       base::Time end_time,
                                       const CompletionCallback& callback) {
   return net::ERR_FAILED;
 }
 
 int BackendImplV3::DoomEntriesSince(base::Time initial_time,
                                     const CompletionCallback& callback) {
   return net::ERR_FAILED;
 }
 
+int BackendImplV3::CalculateSizeOfEntriesBetween(
+    base::Time initial_time,
+    base::Time end_time,
+    const CompletionCallback& callback) {
+  return net::ERR_FAILED;
+}
 
 class BackendImplV3::NotImplementedIterator : public Backend::Iterator {
  public:
   int OpenNextEntry(disk_cache::Entry** next_entry,
                     const net::CompletionCallback& callback) override {
     return net::ERR_NOT_IMPLEMENTED;
   }
 };
 
 scoped_ptr<Backend::Iterator> BackendImplV3::CreateIterator() {
   return scoped_ptr<Iterator>(new NotImplementedIterator());
 }
 
 void BackendImplV3::GetStats(StatsItems* stats) {
   NOTIMPLEMENTED();
 }
 
 void BackendImplV3::OnExternalCacheHit(const std::string& key) {
   NOTIMPLEMENTED();
 }
 
 void BackendImplV3::CleanupCache() {
 }
 
 }  // namespace disk_cache