Adds a --deterministic-fetch flag to headless_shell

headless/public/util/testing/generic_url_request_mocks.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_TESTING_GENERIC_URL_REQUEST_MOCKS_H_
 #define HEADLESS_PUBLIC_UTIL_TESTING_GENERIC_URL_REQUEST_MOCKS_H_
 
 #include <memory>
 #include <string>
 
@@ skipping 15 matching lines @@
 
 namespace headless {
 
 class MockGenericURLRequestJobDelegate : public GenericURLRequestJob::Delegate {
  public:
   MockGenericURLRequestJobDelegate();
   ~MockGenericURLRequestJobDelegate() override;
 
   bool BlockOrRewriteRequest(
       const GURL& url,
+      const std::string& method,
       const std::string& referrer,
       GenericURLRequestJob::RewriteCallback callback) override;
 
   const GenericURLRequestJob::HttpResponse* MaybeMatchResource(
       const GURL& url,
+      const std::string& method,
       const net::HttpRequestHeaders& request_headers) override;
 
   void OnResourceLoadComplete(const GURL& final_url,
                               const std::string& mime_type,
                               int http_response_code) override;
 
   void SetShouldBlock(bool should_block) { should_block_ = should_block; }
 
  private:
   bool should_block_;
@@ skipping 93 matching lines @@
 
  private:
   std::string response_data_;
 
   DISALLOW_COPY_AND_ASSIGN(MockURLRequestDelegate);
 };
 
 }  // namespace headless
 
 #endif  // HEADLESS_PUBLIC_UTIL_TESTING_GENERIC_URL_REQUEST_MOCKS_H_