Adds a --deterministic-fetch flag to headless_shell

headless/public/util/testing/generic_url_request_mocks.cc

 // 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.
 
 #include "headless/public/util/testing/generic_url_request_mocks.h"
 
 #include "base/logging.h"
 
 namespace net {
 class URLRequestJob;
 }  // namespace net
 
 namespace headless {
 
 // MockGenericURLRequestJobDelegate
 MockGenericURLRequestJobDelegate::MockGenericURLRequestJobDelegate()
     : should_block_(false) {}
 MockGenericURLRequestJobDelegate::~MockGenericURLRequestJobDelegate() {}
 
 bool MockGenericURLRequestJobDelegate::BlockOrRewriteRequest(
     const GURL& url,
+    const std::string& method,
     const std::string& referrer,
     GenericURLRequestJob::RewriteCallback callback) {
   if (should_block_)
-    callback(GenericURLRequestJob::RewriteResult::kDeny, GURL());
+    callback(GenericURLRequestJob::RewriteResult::kDeny, GURL(), method);
   return should_block_;
 }
 
 const GenericURLRequestJob::HttpResponse*
 MockGenericURLRequestJobDelegate::MaybeMatchResource(
     const GURL& url,
+    const std::string& method,
     const net::HttpRequestHeaders& request_headers) {
   return nullptr;
 }
 
 void MockGenericURLRequestJobDelegate::OnResourceLoadComplete(
     const GURL& final_url,
     const std::string& mime_type,
     int http_response_code) {}
 
 // MockCookieStore
@@ skipping 119 matching lines @@
                                              int bytes_read) {}
 const std::string& MockURLRequestDelegate::response_data() const {
   return response_data_;
 }
 
 const net::IOBufferWithSize* MockURLRequestDelegate::metadata() const {
   return nullptr;
 }
 
 }  // namespace headless