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..5b7ab527669c5f3da21beddaa28cdf3c590e4aea 100644
--- a/webkit/dom_storage/dom_storage_session.cc
+++ b/webkit/dom_storage/dom_storage_session.cc
@@ -31,6 +31,22 @@ DomStorageSession* DomStorageSession::Clone() {
   return new DomStorageSession(context_, clone_id);
 }
 
+void DomStorageSession::AddSessionStorageObserver(
+    int64 namespace_id,
+    DomStorageContext::SessionStorageObserver* observer) {
+  context_->task_runner()->PostTask(
+      FROM_HERE,
+      base::Bind(&DomStorageContext::AddSessionStorageObserver,
+                 context_, namespace_id_, observer));
+}
+
+void DomStorageSession::RemoveSessionStorageObserver(int64 namespace_id) {
+  context_->task_runner()->PostTask(
+      FROM_HERE,
+      base::Bind(&DomStorageContext::RemoveSessionStorageObserver,
+                 context_, namespace_id_));
+}
+
 DomStorageSession::DomStorageSession(DomStorageContext* context,
                                      int64 namespace_id)
     : context_(context),