Implement simple http server with set cookie functionality.

ios/web/public/test/response_providers/html_response_provider.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_H_
 #define IOS_WEB_PUBLIC_TEST_RESPONSE_PROVIDERS_HTML_RESPONSE_PROVIDER_H_
 
 #include <map>
 #include <string>
 
 #include "base/memory/ref_counted.h"
 #include "ios/web/public/test/response_providers/data_response_provider.h"
 #include "ios/web/public/test/response_providers/html_response_provider_impl.h"
 #include "ios/web/public/test/response_providers/response_provider.h"
 #include "url/gurl.h"
 
 namespace net {
 class HttpResponseHeaders;
 }
 
 // A web::DataResponseProvider that maps URLs to requests.
 class HtmlResponseProvider : public web::DataResponseProvider {
  public:
   // Constructs an HtmlResponseProvider that does not respond to any request.
   HtmlResponseProvider();
   // Constructs an HtmlResponseProvider that generates a simple string response
   // to a URL based on the mapping present in |responses|.
   explicit HtmlResponseProvider(const std::map<GURL, std::string>& responses);
+  // Constructs an HtmlResponseProvider that generates a simple string response
+  // to a URL based on the mapping present in |responses| and |cookie|.
+  explicit HtmlResponseProvider(const std::map<GURL, std::string>& responses,
+                                const std::string& cookie);

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

I don't think "explicit" on a constructor w/ more than 1 parameter means
anything. Do you?
See HtmlResponseProviderImpl as well.

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

Done.

   // Constructs an HtmlResponseProvider that generates a response to a URL based
   // on the mapping present in |responses|.
   explicit HtmlResponseProvider(
       const std::map<GURL, HtmlResponseProviderImpl::Response>& responses);
 
   ~HtmlResponseProvider() override;
 
   // web::ResponseProvider implementation.
   bool CanHandleRequest(const Request& request) override;
   // web::DataResponseProvider implementation.
   void GetResponseHeadersAndBody(
       const Request& request,
       scoped_refptr<net::HttpResponseHeaders>* headers,
       std::string* response_body) override;
 
  private:
   std::unique_ptr<HtmlResponseProviderImpl> response_provider_impl_;
 };
 
 #endif  // IOS_WEB_PUBLIC_TEST_RESPONSE_PROVIDERS_HTML_RESPONSE_PROVIDER_H_