Implement simple http server with set cookie functionality.

ios/web/public/test/response_providers/response_provider.h

Index: ios/web/public/test/response_providers/response_provider.h
diff --git a/ios/web/public/test/response_providers/response_provider.h b/ios/web/public/test/response_providers/response_provider.h
index f3d56f50867808813a418b93914e8ccdfc06ec54..82ca5214fb5e37066db2ca96e7a7f26a1e22fcff 100644
--- a/ios/web/public/test/response_providers/response_provider.h
+++ b/ios/web/public/test/response_providers/response_provider.h
@@ -53,6 +53,10 @@ class ResponseProvider {
   // Gets default response headers with a text/html content type and a 200
   // response code.
   static scoped_refptr<net::HttpResponseHeaders> GetDefaultResponseHeaders();
+  // Gets default response headers with a text/html content type and a 200
+  // response code.

[pkl (ping after 24h if needed), 2016/08/30 21:24:04]

This comment does not match what this method actually does. It should describe
what it does with |cookie|.

[liaoyuke, 2016/09/12 18:58:13]

Acknowledged.

+  static scoped_refptr<net::HttpResponseHeaders> GetDefaultResponseHeaders(
+      const std::string& cookie);
   // Gets configurable response headers with a provided content type and a
   // 200 response code.
   static scoped_refptr<net::HttpResponseHeaders> GetResponseHeaders(