Reuse webview classic cookies file

content/public/browser/cookie_store_factory.h

Index: content/public/browser/cookie_store_factory.h
diff --git a/content/public/browser/cookie_store_factory.h b/content/public/browser/cookie_store_factory.h
index c7a9c6eb4172ee576529f5b756dd7efc638893df..90a53fb54dda5d57f6ffb13e60252fcb8935f17c 100644
--- a/content/public/browser/cookie_store_factory.h
+++ b/content/public/browser/cookie_store_factory.h
@@ -18,11 +18,17 @@ class SpecialStoragePolicy;
 
 namespace content {
 
+// All blocking database accesses will be performed on
+// |background_task_runner|, while |client_task_runner| is used to invoke
+// callbacks.
 CONTENT_EXPORT net::CookieStore* CreatePersistentCookieStore(
     const base::FilePath& path,
     bool restore_old_session_cookies,
     quota::SpecialStoragePolicy* storage_policy,
-    net::CookieMonster::Delegate* cookie_monster_delegate);
+    net::CookieMonster::Delegate* cookie_monster_delegate,
+    const scoped_refptr<base::SequencedTaskRunner>& client_task_runner,
+    const scoped_refptr<base::SequencedTaskRunner>& background_task_runner);
+
 
 }  // namespace content