Move SessionStorageNamespace entirely into NavigationController and support StoragePartitions.

chrome/browser/sessions/tab_restore_service.cc

Index: chrome/browser/sessions/tab_restore_service.cc
diff --git a/chrome/browser/sessions/tab_restore_service.cc b/chrome/browser/sessions/tab_restore_service.cc
index 76d97bd538aec6eecf91a7a5e067520c6f52dbbe..272dcf42fb6ab2eac06f48cef6d1c63e8aa3f5fb 100644
--- a/chrome/browser/sessions/tab_restore_service.cc
+++ b/chrome/browser/sessions/tab_restore_service.cc
@@ -546,7 +546,9 @@ void TabRestoreService::PopulateTab(Tab* tab,
       tab->extension_app_id = extension->id();
   }
 
-  tab->session_storage_namespace = controller->GetSessionStorageNamespace();
+  // TODO(ajwong): This does not correctly handle storage for isolated apps.
+  tab->session_storage_namespace =
+        controller->GetSessionStorageNamespaceMap().find("")->second;
 
   // Delegate may be NULL during unit tests.
   if (delegate) {