Persist sessionStorage on disk.

webkit/dom_storage/dom_storage_session.cc

Index: webkit/dom_storage/dom_storage_session.cc
diff --git a/webkit/dom_storage/dom_storage_session.cc b/webkit/dom_storage/dom_storage_session.cc
index e70d497c90c2e19dc790027d2d7bebf4c305eb61..e4adb5dd664892e67a20746a1e5f00d55da718cb 100644
--- a/webkit/dom_storage/dom_storage_session.cc
+++ b/webkit/dom_storage/dom_storage_session.cc
@@ -15,26 +15,41 @@ namespace dom_storage {
 
 DomStorageSession::DomStorageSession(DomStorageContext* context)
     : context_(context),
-      namespace_id_(context->AllocateSessionId()) {
+      namespace_id_(context->AllocateSessionId()),
+      persistent_namespace_id_(context->AllocatePersistentSessionId()) {
   context->task_runner()->PostTask(
       FROM_HERE,
       base::Bind(&DomStorageContext::CreateSessionNamespace,
-                 context_, namespace_id_));
+                 context_, namespace_id_, persistent_namespace_id_));
+}
+
+DomStorageSession::DomStorageSession(DomStorageContext* context,
+                                     const std::string& persistent_namespace_id)
+    : context_(context),
+      namespace_id_(context->AllocateSessionId()),
+      persistent_namespace_id_(persistent_namespace_id) {
+  context->task_runner()->PostTask(
+      FROM_HERE,
+      base::Bind(&DomStorageContext::CreateSessionNamespace,
+                 context_, namespace_id_, persistent_namespace_id_));
 }
 
 DomStorageSession* DomStorageSession::Clone() {
   int64 clone_id = context_->AllocateSessionId();
+  std::string persistent_clone_id = context_->AllocatePersistentSessionId();
   context_->task_runner()->PostTask(
       FROM_HERE,
       base::Bind(&DomStorageContext::CloneSessionNamespace,
-                 context_, namespace_id_, clone_id));
-  return new DomStorageSession(context_, clone_id);
+                 context_, namespace_id_, clone_id, persistent_clone_id));
+  return new DomStorageSession(context_, clone_id, persistent_clone_id);
 }
 
 DomStorageSession::DomStorageSession(DomStorageContext* context,
-                                     int64 namespace_id)
+                                     int64 namespace_id,
+                                     const std::string& persistent_namespace_id)
     : context_(context),
-      namespace_id_(namespace_id) {
+      namespace_id_(namespace_id),
+      persistent_namespace_id_(persistent_namespace_id) {
   // This ctor is intended for use by the Clone() method.
 }