Remove unused CookiePreferences from report sender and never send cookies

chrome/browser/ssl/chrome_expect_ct_reporter.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 "chrome/browser/ssl/chrome_expect_ct_reporter.h"
 
 #include <string>
 
 #include "base/base64.h"
 #include "base/command_line.h"
@@ skipping 98 matching lines @@
 void RecordUMAOnFailure(const GURL& report_uri,
                         int net_error,
                         int http_response_code) {
   UMA_HISTOGRAM_SPARSE_SLOWLY("SSL.ExpectCTReportFailure2", -net_error);
 }
 
 }  // namespace
 
 ChromeExpectCTReporter::ChromeExpectCTReporter(
     net::URLRequestContext* request_context)
-    : report_sender_(
-          new net::ReportSender(request_context,
-                                net::ReportSender::DO_NOT_SEND_COOKIES)) {}
+    : report_sender_(new net::ReportSender(request_context)) {}
 
 ChromeExpectCTReporter::~ChromeExpectCTReporter() {}
 
 void ChromeExpectCTReporter::OnExpectCTFailed(
     const net::HostPortPair& host_port_pair,
     const GURL& report_uri,
     const net::SSLInfo& ssl_info) {
   if (report_uri.is_empty())
     return;
 
@@ skipping 42 matching lines @@
     LOG(ERROR) << "Failed to serialize Expect CT report";
     return;
   }
 
   UMA_HISTOGRAM_BOOLEAN("SSL.ExpectCTReportSendingAttempt", true);
 
   report_sender_->Send(report_uri, "application/json; charset=utf-8",
                        serialized_report, base::Callback<void()>(),
                        base::Bind(RecordUMAOnFailure));
 }