diff --git components/certificate_transparency/chrome_ct_policy_enforcer.cc components/certificate_transparency/chrome_ct_policy_enforcer.cc
index a2e2b493def0..c08872260c68 100644
--- components/certificate_transparency/chrome_ct_policy_enforcer.cc
+++ components/certificate_transparency/chrome_ct_policy_enforcer.cc
@@ -36,15 +36,6 @@ namespace certificate_transparency {
 
 namespace {
 
-// Returns true if the current build is recent enough to ensure that
-// built-in security information (e.g. CT Logs) is fresh enough.
-// TODO(eranm): Move to base or net/base
-bool IsBuildTimely() {
-  const base::Time build_time = base::GetBuildTime();
-  // We consider built-in information to be timely for 10 weeks.
-  return (base::Time::Now() - build_time).InDays() < 70 /* 10 weeks */;
-}
-
 // Returns a rounded-down months difference of |start| and |end|,
 // together with an indication of whether the last month was
 // a full month, because the range starts specified in the policy
@@ -304,4 +295,16 @@ CTPolicyCompliance ChromeCTPolicyEnforcer::CheckCompliance(
   return compliance;
 }
 
+// Returns true if the current build is recent enough to ensure that
+// built-in security information (e.g. CT Logs) is fresh enough.
+// TODO(eranm): Move to base or net/base
+bool ChromeCTPolicyEnforcer::IsBuildTimely() const {
+  if (!enforce_net_security_expiration_)
+    return true;
+
+  const base::Time build_time = base::GetBuildTime();
+  // We consider built-in information to be timely for 10 weeks.
+  return (base::Time::Now() - build_time).InDays() < 70 /* 10 weeks */;
+}
+
 }  // namespace certificate_transparency
diff --git components/certificate_transparency/chrome_ct_policy_enforcer.h components/certificate_transparency/chrome_ct_policy_enforcer.h
index f61ff0d0564a..e6727c7b1cbc 100644
--- components/certificate_transparency/chrome_ct_policy_enforcer.h
+++ components/certificate_transparency/chrome_ct_policy_enforcer.h
@@ -26,6 +26,17 @@ class ChromeCTPolicyEnforcer : public net::CTPolicyEnforcer {
       net::X509Certificate* cert,
       const net::ct::SCTList& verified_scts,
       const net::NetLogWithSource& net_log) override;
+
+  void set_enforce_net_security_expiration(bool enforce) {
+    enforce_net_security_expiration_ = enforce;
+  }
+
+ private:
+  // Returns true if the current build is recent enough to ensure that
+  // built-in security information (e.g. CT Logs) is fresh enough.
+  bool IsBuildTimely() const;
+
+  bool enforce_net_security_expiration_ = true;
 };
 
 }  // namespace certificate_transparency
diff --git net/http/transport_security_state.cc net/http/transport_security_state.cc
index 2dc467772e86..fdb047099ff5 100644
--- net/http/transport_security_state.cc
+++ net/http/transport_security_state.cc
@@ -1153,8 +1153,10 @@ void TransportSecurityState::ClearReportCachesForTesting() {
   sent_expect_ct_reports_cache_.Clear();
 }
 
-// static
-bool TransportSecurityState::IsBuildTimely() {
+bool TransportSecurityState::IsBuildTimely() const {
+  if (!enforce_net_security_expiration_)
+    return true;
+
   const base::Time build_time = base::GetBuildTime();
   // We consider built-in information to be timely for 10 weeks.
   return (base::Time::Now() - build_time).InDays() < 70 /* 10 weeks */;
diff --git net/http/transport_security_state.h net/http/transport_security_state.h
index 9c65b59e4ec2..0ac0509abf78 100644
--- net/http/transport_security_state.h
+++ net/http/transport_security_state.h
@@ -561,6 +561,10 @@ class NET_EXPORT TransportSecurityState {
   // Expect-CT reports.
   void ClearReportCachesForTesting();
 
+  void set_enforce_net_security_expiration(bool enforce) {
+    enforce_net_security_expiration_ = enforce;
+  }
+
  private:
   friend class TransportSecurityStateTest;
   friend class TransportSecurityStateStaticFuzzer;
@@ -581,7 +585,7 @@ class NET_EXPORT TransportSecurityState {
   // IsBuildTimely returns true if the current build is new enough ensure that
   // built in security information (i.e. HSTS preloading and pinning
   // information) is timely.
-  static bool IsBuildTimely();
+  bool IsBuildTimely() const;
 
   // Helper method for actually checking pins.
   PKPStatus CheckPublicKeyPinsImpl(
@@ -679,6 +683,8 @@ class NET_EXPORT TransportSecurityState {
   // True if public key pinning bypass is enabled for local trust anchors.
   bool enable_pkp_bypass_for_local_trust_anchors_;
 
+  bool enforce_net_security_expiration_ = true;
+
   ExpectCTReporter* expect_ct_reporter_ = nullptr;
 
   RequireCTDelegate* require_ct_delegate_ = nullptr;