Implement simple http server with set cookie functionality.

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

 // Copyright 2016 The Chromium Authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 #ifndef IOS_WEB_PUBLIC_TEST_RESPONSE_PROVIDERS_HTML_RESPONSE_PROVIDER_IMPL_H_
 #define IOS_WEB_PUBLIC_TEST_RESPONSE_PROVIDERS_HTML_RESPONSE_PROVIDER_IMPL_H_
 
 #include <map>
 #include <string>
 
@@ skipping 21 matching lines @@
     std::string body;
     scoped_refptr<net::HttpResponseHeaders> headers;
   };
   // Constructs an HtmlResponseProviderImpl that does not respond to any
   // request.
   HtmlResponseProviderImpl();
   // Constructs an HtmlResponseProviderImpl that generates a simple string
   // response to a URL based on the mapping present in |responses|.
   explicit HtmlResponseProviderImpl(
       const std::map<GURL, std::string>& responses);
+  // Constructs an HtmlResponseProviderImpl that generates a simple string
+  // response to a URL based on the mapping present in |responses| and |cookie|.
+  explicit HtmlResponseProviderImpl(
+      const std::map<GURL, std::string>& responses,
+      const std::string& cookie);
   // Constructs an HtmlResponseProviderImpl that generates a response to a URL
   // based on the mapping present in |responses|.
   explicit HtmlResponseProviderImpl(const std::map<GURL, Response>& responses);
 
   virtual ~HtmlResponseProviderImpl();
 
   // Creates a reponse based on a redirect to |destination_url|.
   static HtmlResponseProviderImpl::Response GetRedirectResponse(
       const GURL& destination_url,
       const net::HttpStatusCode& http_status);
 
   // Creates a response with |net::HTTP_OK|.
   static HtmlResponseProviderImpl::Response GetSimpleResponse(
       const std::string& body);
 
   // Returns true if the request can be handled.
   bool CanHandleRequest(const web::ResponseProvider::Request& request);
   // Returns the headers and the response body.
   void GetResponseHeadersAndBody(
       const web::ResponseProvider::Request& request,
       scoped_refptr<net::HttpResponseHeaders>* headers,
       std::string* response_body);
 
  private:
   const std::map<GURL, Response> responses_;
 };
 
-#endif  // IOS_WEB_PUBLIC_TEST_RESPONSE_PROVIDERS_HTML_RESPONSE_PROVIDER_IMPL_H_
+#endif  // IOS_WEB_PUBLIC_TEST_RESPONSE_PROVIDERS_HTML_RESPONSE_PROVIDER_IMPL_H_