Purge browser cache for dom storage in a smarter way

content/browser/dom_storage/local_storage_database_adapter.cc

 // Copyright 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.
 
 #include "content/browser/dom_storage/local_storage_database_adapter.h"
 
 #include "base/files/file_util.h"
 #include "content/browser/dom_storage/dom_storage_database.h"
 
 namespace content {
@@ skipping 19 matching lines @@
 }
 
 void LocalStorageDatabaseAdapter::Reset() {
   db_.reset(new DOMStorageDatabase(db_->file_path()));
 }
 
 LocalStorageDatabaseAdapter::LocalStorageDatabaseAdapter()
     : db_(new DOMStorageDatabase()) {
 }
 
+void LocalStorageDatabaseAdapter::TrimDatabase() {
+  db_->TrimDatabase();
+}
+
 }  // namespace content