Make session restore understand that tabs have multiple SessionStorageNamespaces.

chrome/browser/sessions/session_service.h

Index: chrome/browser/sessions/session_service.h
diff --git a/chrome/browser/sessions/session_service.h b/chrome/browser/sessions/session_service.h
index 97621cf68dba6eb3f889fb12185817babafa3f6f..efa4ffb869eee182906ec9f22666c8da2d6274f1 100644
--- a/chrome/browser/sessions/session_service.h
+++ b/chrome/browser/sessions/session_service.h
@@ -256,7 +256,8 @@ class SessionService : public BaseSessionService,
 
   SessionCommand* CreateSessionStorageAssociatedCommand(
       const SessionID& tab_id,
-      const std::string& session_storage_persistent_id);
+      const std::string& session_storage_persistent_id,
+      const std::string& partition_id);
 
   // Callback from the backend for getting the commands from the save file.
   // Converts the commands in SessionWindows and notifies the real callback.