mandoline filesystem: Save cookie data to the mojo:filesystem.

mojo/runner/context.h

Index: mojo/runner/context.h
diff --git a/mojo/runner/context.h b/mojo/runner/context.h
index 93a05485084030a84d7bf35be9a6729402005033..0d1199ea69071d2906c3c319bcebaaca7b667a9e 100644
--- a/mojo/runner/context.h
+++ b/mojo/runner/context.h
@@ -10,6 +10,7 @@
 #include "base/callback_forward.h"
 #include "base/macros.h"
 #include "mojo/edk/embedder/process_delegate.h"
+#include "mojo/runner/scoped_user_data_dir.h"
 #include "mojo/runner/task_runners.h"
 #include "mojo/runner/url_resolver.h"
 #include "mojo/shell/application_manager.h"
@@ -84,6 +85,7 @@ class Context : public shell::ApplicationManager::Delegate,
 
   void OnApplicationEnd(const GURL& url);
 
+  ScopedUserDataDir scoped_user_data_dir;
   std::set<GURL> app_urls_;
   scoped_ptr<TaskRunners> task_runners_;
   shell::ApplicationManager application_manager_;