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

chrome/browser/net/chrome_network_delegate.cc

Index: chrome/browser/net/chrome_network_delegate.cc
diff --git a/chrome/browser/net/chrome_network_delegate.cc b/chrome/browser/net/chrome_network_delegate.cc
index 6bc5cf0e19b8a9ede4b3d83df0f62191831927e8..245d8723aa4b6434a51228195c70228ef693f878 100644
--- a/chrome/browser/net/chrome_network_delegate.cc
+++ b/chrome/browser/net/chrome_network_delegate.cc
@@ -16,7 +16,6 @@
 #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"
@@ -554,14 +553,6 @@ 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,