Implements strict secure cookies as the default behavior in //net

chrome/browser/net/chrome_network_delegate.cc

 // Copyright (c) 2012 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/net/chrome_network_delegate.h"
 
 #include <stddef.h>
 #include <stdlib.h>
 
 #include <vector>
 
 #include "base/base_paths.h"
 #include "base/command_line.h"
 #include "base/debug/alias.h"
 #include "base/debug/dump_without_crashing.h"
 #include "base/debug/stack_trace.h"
 #include "base/logging.h"
 #include "base/macros.h"
-#include "base/metrics/field_trial.h"
 #include "base/metrics/histogram_macros.h"
 #include "base/metrics/sparse_histogram.h"
 #include "base/metrics/user_metrics.h"
 #include "base/path_service.h"
 #include "base/profiler/scoped_tracker.h"
 #include "base/strings/string_number_conversions.h"
 #include "base/strings/string_util.h"
 #include "base/time/time.h"
 #include "build/build_config.h"
 #include "chrome/browser/browser_process.h"
@@ skipping 517 matching lines @@
       url, first_party_for_cookies, &reading_cookie_allowed,
       &setting_cookie_allowed);
   bool privacy_mode = !(reading_cookie_allowed && setting_cookie_allowed);
   return privacy_mode;
 }
 
 bool ChromeNetworkDelegate::OnAreExperimentalCookieFeaturesEnabled() const {
   return experimental_web_platform_features_enabled_;
 }
 
-bool ChromeNetworkDelegate::OnAreStrictSecureCookiesEnabled() const {
-  const std::string enforce_strict_secure_group =
-      base::FieldTrialList::FindFullName("StrictSecureCookies");
-  return experimental_web_platform_features_enabled_ ||
-         base::StartsWith(enforce_strict_secure_group, "Enabled",
-                          base::CompareCase::INSENSITIVE_ASCII);
-}
-
 bool ChromeNetworkDelegate::OnCancelURLRequestWithPolicyViolatingReferrerHeader(
     const net::URLRequest& request,
     const GURL& target_url,
     const GURL& referrer_url) const {
   ReportInvalidReferrerSend(target_url, referrer_url);
   return true;
 }
 
 void ChromeNetworkDelegate::ReportDataUsageStats(net::URLRequest* request,
                                                  int64_t tx_bytes,
                                                  int64_t rx_bytes) {
   if (!data_use_aggregator_)
     return;
 
   if (is_data_usage_off_the_record_) {
     data_use_aggregator_->ReportOffTheRecordDataUse(tx_bytes, rx_bytes);
     return;
   }
 
   data_use_aggregator_->ReportDataUse(request, tx_bytes, rx_bytes);
 }