Persist sessionStorage on disk.

webkit/dom_storage/local_storage_database_adapter.cc

Index: webkit/dom_storage/local_storage_database_adapter.cc
diff --git a/webkit/dom_storage/local_storage_database_adapter.cc b/webkit/dom_storage/local_storage_database_adapter.cc
new file mode 100644
index 0000000000000000000000000000000000000000..6e715d73d9a000e5898afe87984d10a259f70c57
--- /dev/null
+++ b/webkit/dom_storage/local_storage_database_adapter.cc
@@ -0,0 +1,42 @@
+// 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 "webkit/dom_storage/local_storage_database_adapter.h"
+
+#include "base/file_util.h"
+#include "webkit/dom_storage/dom_storage_database.h"
+
+namespace dom_storage {
+
+LocalStorageDatabaseAdapter::LocalStorageDatabaseAdapter(
+    const FilePath& path)
+    : db_(new DomStorageDatabase(path)) {
+}
+
+LocalStorageDatabaseAdapter::~LocalStorageDatabaseAdapter() { }
+
+void LocalStorageDatabaseAdapter::ReadAllValues(ValuesMap* result) {
+  db_->ReadAllValues(result);
+}
+
+bool LocalStorageDatabaseAdapter::CommitChanges(
+    bool clear_all_first, const ValuesMap& changes) {
+  return db_->CommitChanges(clear_all_first, changes);
+}
+
+void LocalStorageDatabaseAdapter::DeleteFiles() {
+  file_util::Delete(db_->file_path(), false);
+  file_util::Delete(
+      DomStorageDatabase::GetJournalFilePath(db_->file_path()), false);
+}
+
+void LocalStorageDatabaseAdapter::Reset() {
+  db_.reset(new DomStorageDatabase(db_->file_path()));
+}
+
+LocalStorageDatabaseAdapter::LocalStorageDatabaseAdapter()
+    : db_(new DomStorageDatabase()) {
+}
+
+}  // namespace dom_storage