Add CookieStoreConfig to unify API for in-memory and persistent CookieStore Creation.

content/shell/browser/shell_url_request_context_getter.cc

Index: content/shell/browser/shell_url_request_context_getter.cc
diff --git a/content/shell/browser/shell_url_request_context_getter.cc b/content/shell/browser/shell_url_request_context_getter.cc
index c31b26c229a5b3618b9947a97b4d6588d72a89f6..5ec8f236c1eb1ee01c2d6a08bda8bdd5ab643ced 100644
--- a/content/shell/browser/shell_url_request_context_getter.cc
+++ b/content/shell/browser/shell_url_request_context_getter.cc
@@ -102,7 +102,8 @@ net::URLRequestContext* ShellURLRequestContextGetter::GetURLRequestContext() {
     url_request_context_->set_network_delegate(network_delegate_.get());
     storage_.reset(
         new net::URLRequestContextStorage(url_request_context_.get()));
-    storage_->set_cookie_store(CreateInMemoryCookieStore(NULL));
+    storage_->set_cookie_store(
+        content::CreateCookieStore(content::CookieStoreConfig()));
     storage_->set_server_bound_cert_service(new net::ServerBoundCertService(
         new net::DefaultServerBoundCertStore(NULL),
         base::WorkerPool::GetTaskRunner(true)));