Adds a --deterministic-fetch flag to headless_shell

headless/public/util/generic_url_request_job.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 HEADLESS_PUBLIC_UTIL_GENERIC_URL_REQUEST_JOB_H_
 #define HEADLESS_PUBLIC_UTIL_GENERIC_URL_REQUEST_JOB_H_
 
 #include <stddef.h>
 #include <functional>
 #include <memory>
@@ skipping 20 matching lines @@
 // Intended for use in a protocol handler, this ManagedDispatchURLRequestJob has
 // the following features:
 //
 // 1. The delegate can extension observe / cancel and redirect requests
 // 2. The delegate can optionally provide the results, otherwise the specifed
 //    fetcher is invoked.
 class GenericURLRequestJob : public ManagedDispatchURLRequestJob,
                              public URLFetcher::ResultListener {
  public:
   enum class RewriteResult { kAllow, kDeny, kFailure };
-  using RewriteCallback =
-      std::function<void(RewriteResult result, const GURL& url)>;
+  using RewriteCallback = std::function<
+      void(RewriteResult result, const GURL& url, const std::string& method)>;
 
   struct HttpResponse {
     GURL final_url;
     int http_response_code;
 
     // The HTTP headers and response body. Note the lifetime of |response_data|
     // is expected to outlive the GenericURLRequestJob.
     const char* response_data;  // NOT OWNED
     size_t response_data_size;
   };
 
   class Delegate {
    public:
     // Allows the delegate to rewrite the URL for a given request. Return true
     // to signal that the rewrite is in progress and |callback| will be called
     // with the result, or false to indicate that no rewriting is necessary.
     // Called on an arbitrary thread.
     virtual bool BlockOrRewriteRequest(const GURL& url,
+                                       const std::string& method,
                                        const std::string& referrer,
                                        RewriteCallback callback) = 0;
 
     // Allows the delegate to synchronously fulfill a request with a reply.
     // Called on an arbitrary thread.
     virtual const HttpResponse* MaybeMatchResource(
         const GURL& url,
+        const std::string& method,
         const net::HttpRequestHeaders& request_headers) = 0;
 
     // Signals that a resource load has finished. Called on an arbitrary thread.
     virtual void OnResourceLoadComplete(const GURL& final_url,
                                         const std::string& mime_type,
                                         int http_response_code) = 0;
 
    protected:
     virtual ~Delegate() {}
   };
@@ skipping 19 matching lines @@
   // URLFetcher::FetchResultListener implementation:
   void OnFetchStartError(net::Error error) override;
   void OnFetchComplete(const GURL& final_url,
                        int http_response_code,
                        scoped_refptr<net::HttpResponseHeaders> response_headers,
                        const char* body,
                        size_t body_size) override;
 
  private:
   void PrepareCookies(const GURL& rewritten_url,
+                      const std::string& method,
                       const url::Origin& site_for_cookies);
 
   void OnCookiesAvailable(const GURL& rewritten_url,
+                          const std::string& method,
                           const net::CookieList& cookie_list);
 
   std::unique_ptr<URLFetcher> url_fetcher_;
   net::HttpRequestHeaders extra_request_headers_;
   scoped_refptr<net::HttpResponseHeaders> response_headers_;
   Delegate* delegate_;          // Not owned.
   const char* body_ = nullptr;  // Not owned.
   int http_response_code_ = 0;
   size_t body_size_ = 0;
   size_t read_offset_ = 0;
 
   base::WeakPtrFactory<GenericURLRequestJob> weak_factory_;
 
   DISALLOW_COPY_AND_ASSIGN(GenericURLRequestJob);
 };
 
 }  // namespace headless
 
 #endif  // HEADLESS_PUBLIC_UTIL_GENERIC_URL_REQUEST_JOB_H_